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19	<tr style="font: 10pt arial,helvetica,verdana">
20	<td bgcolor=#9999cc align=center><a href="/"><img src="images/awstats_logo4.png" border=0></a></td>
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22	<br>
23	<font style="font: 16pt arial,helvetica,sans-serif" color=#EEEEFF><b>AWStats logfile analyzer 6.9 Documentation</b></font><br>
24	<br>
25	</td>
26	<td bgcolor=#9999cc align=center>
27
28	</td>
29	</tr>
30
31	</table>
32
33
34	<br><br><H1 style="font: 26px arial,helvetica,sans-serif">Glossary</H1><br>
35
36	<a name="Unique Visitor"><b>Unique Visitor</b></a>:<br>
37	A unique visitor is a host that has made at least 1 hit
38	on 1 page of your web site during the current period shown by the report.
39	If this host make several visits during this period, it is counted only once.<br>
40	The period shown by AWStats reports is by default the current month.<br>
41	However if you use AWStats as a CGI you can click on the "year" link to have a report for all the year.
42	In a such report, period is full year, so Unique Visitors are number of hosts that have made at least 1 hit
43	on 1 page of your web site during those year.<br>
44	<hr>
45
46	<a name="Visits"><b>Visits</b></a>:<br>
47	Number of visits made by all visitors.<br>
48	Think "session" here, say a unique IP accesses a page, and then requests three others without an hour
49	between any of the requests, all of the "pages" are included in the visit, therefore you should expect
50	multiple pages per visit and multiple visits per unique visitor (assuming that some of the unique IPs are
51	logged with more than an hour between requests)<br>
52	<hr>
53
54	<a name="Pages"><b>Pages</b></a>:<br>
55	The number of "pages" logged. Only files that don't match an entry in the NotPageList config
56	parameter (and match an entry of OnlyFiles config parameter if used) are counted as "Pages".
57	Usually pages are reserved for HTML files or CGI files, not images nor other files requested as a result
58	of loading a "Page" (like js,css... files).<br>
59	<hr>
60
61	<a name="Hits"><b>Hits</b></a>:<br>
62	Any files requested from the server (including files that are "Pages") except those that match
63	the SkipFiles config parameter.<br>
64	<hr>
65
66
67	<a name="Bandwidth"><b>Bandwidth</b></a>:<br>
68	Total number of bytes for pages, images and files downloaded by web browsing.<br>
69	Note 1: Of course, this number includes only traffic for web only (or mail only, or ftp only
70	depending on value of LogType).<br>
71	Note 2: This number does not include technical header data size used inside the HTTP or HTTPS protocol or by
72	protocols at a lower level (TCP, IP...).<br>
73	Because of two previous notes, this number is often lower than bandwith reported by your provider (your
74	provider counts in most cases bandwitdh at a lower level and includes all IP and UDP traffic).<br>
75	<hr>
76
77	<a name="Entry Page"><b>Entry Page</b></a>:<br>
78	First page viewed by a visitor during its visit.<br>
79	Note: When a visit started at end of month to end at beginning of next month,
80	you might have an Entry page for the month report and no Exit pages.<br>
81	That's why Entry pages can be different than Exit pages.<br>
82	<hr>
83
84	<a name="Exit Page"><b>Exit Page</b></a>:<br>
85	Last page viewed by a visitor during its visit.<br>
86	Note: When a visit started at end of month to end at beginning of next month,
87	you might have an Entry page for the month report and no Exit pages.<br>
88	That's why Entry pages can be different than Exit pages.<br>
89	<hr>
90
91	<a name="Session Duration"><b>Session Duration</b></a>:<br>
92	The time a visitor spent on your site for each visit.<br>
93	Some Visits durations are 'unknown' because they can't always be calculated. This is the major reason for this:<br>
94	- Visit was not finished when 'update' occured.<br>
95	- Visit started the last hour (after 23:00) of the last day of a month (A technical reason prevents AWStats from
96	calculating duration of such sessions).<br>
97	<hr>
98
99	<a name="Grabber"><b>Grabber</b></a>:<br>
100	A browser that is used primarily for copying locally an entire site. These include
101	for example "teleport", "webcapture", "webcopier"...<br>
102	<hr>
103
104	<a name="Direct"><b>Direct access / Bookmark</b></a>:<br>
105	This number represent the number of hits or ratio of hits when a visit to your site comes
106	from a direct access. This means the first page of your web site was called:<br>
107	- By typing your URL on the web browser address bar<br>
108	- By clicking on your URL stored by a visitor inside its favorites<br>
109	- By clicking on your URL found everywhere but not another internet web pages (a link in a document,
110	an application, etc...)<br>
111	- Clicking an URL of your site inside a mail is often counted here.<br>
112	<hr>
113
114	<a name="AddToFavourites"><b>Add To Favourites</b></a>:<br>
115	This value, available in the "miscellanous chart", reports an estimated indicator
116	that can be used to have an idea of the number of times a visitor has added your web
117	site into its favourite bookmarks.<br>
118	The technical rules for that is the following formula:<br>
119	<i>Number of Add to Favourites = round((x+y) / r)</i><br>
120	where<br>
121	x = Number of hits made by IE browsers for "/anydir/favicon.ico", with a referer field not defined, and with no 404 error code<br>
122	y = Number of hits made by IE browsers for "/favicon.ico", with a referer field not defined, with or without 404 error code<br>
123	r = Ratio of hits made by IE browsers compared to hits made by all browsers (r <= 1)<br>
124	<br>
125	As you can see in formula, only IE is used to count reliable "add", the "Add to favourites"
126	for other browsers are estimated using ratio of other browsers usage compared to ratio of
127	IE usage. The reason is that only IE do a hit on favicon.ico nearly ONLY when a user add the
128	page to its favourites. The other browsers make often hits on this file also for other reasons
129	so we can't count one "hit" as one "add" since it might be a hit for another reason.<br>
130	AWStats differentiate also hits with error and not to avoid counting multiple hits
131	made recursively in upper path when favicon.ico file is not found in deeper directory
132	of path.<br>
133	Note that this number is just an indicator that is in most case higher than true value.
134	The reason is that even IE browser sometimes make hit on favicon without an "Add to favourites"
135	action by a user.
136	<hr>
137
138
139	<a name="HTTP"><b>HTTP Status Codes</b><a>:<br>
140	HTTP status codes are returned by web servers to indicate the status of a request.
141	Codes <b>200</b> and <b>304</b> are used to tell the browser the page can be viewed.
142	All other codes generates hits and traffic 'not seen' by the visitor. For example a return
143	code 301 or 302 will tell the browser to ask another page. The browser will do another hit
144	and should finaly receive the page with a return code <b>200</b> and <b>304</b>.
145	All codes that are 'unseen' traffic are isolated by AWStats in the HTTP Status report chart,
146	enabled by the directives <a href="awstats_config.html#Show">ShowHTTPErrorsStats</a>.
147	in config file. You can also change value for 'not error' hits (set by default to <b>200</b> and <b>304</b>
148	with the <a href="awstats_config.html#ValidHTTPcodes">ValidHTTPcodes</a> directive.
149	The following table outlines all status codes defined for the HTTP/1.1 draft specification
150	outlined in <a href="http://www.w3.org/Protocols/rfc2068/rfc2068">IETF rfc 2068</a>.<br>
151	They are 3-digit codes where the first digit of this code identifies the class of the status
152	code and the remaining 2 digits correspond to the specific condition within the response class.
153	They are classified in 5 categories:<br>
154	<ul>
155	<li><font face="arial"><font size=-1><a href="#1">1xx - informational</a></font></font></li>
156	<li><font face="arial"><font size=-1><a href="#2">2xx - successful</a></font></font></li>
157	<li><font face="arial"><font size=-1><a href="#3">3xx - redirection</a></font></font></li>
158	<li><font face="arial"><font size=-1><a href="#4">4xx - client error </a></font></font></li>
159	<li><font face="arial"><font size=-1><a href="#5">5xx - server error </a></font></font></li>
160	</ul>
161
162
163	<table WIDTH="90%" >
164	<tr><td VALIGN=TOP BGCOLOR="#DADADA">
165
166	<!-- HTTP 1xx codes -->
167	<a NAME="1"></a><b><font face="arial">1xx class - Informational</font></b>
168	<br><font face="arial"><font size=-1>Informational status codes are provisional
169	responses from the web server... they give the client a heads-up on what
170	the server is doing. Informational codes do not indicate an error condition. </font></font>
171
172	<table WIDTH="100%">
173	<tr>
174	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>100</font></font></b></td>
175	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>100 Continue</font></font></b>
176	<br><font face="arial"><font size=-1>The continue status code tells the
177	browser to continue sending a request to the server. </font></font></td>
178	</tr>
179
180	<tr>
181	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>101</font></font></b></td>
182	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>101 Switching Protocols</font></font></b>
183	<br><font face="arial"><font size=-1>The server sends this response when
184	the client asks to switch from HTTP/1.0 to HTTP/1.1 </font></font></td>
185	</tr>
186	</table>
187
188	<p><a NAME="2"></a><b><font face="arial">2xx class - Successful</font></b>
189	<br><font face="arial"><font size=-1>This class of status code indicates
190	that the client's request was received, understood, and successful. </font></font>
191
192	<table WIDTH="100%">
193	<tr>
194	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>200</font></font></b></td>
195	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>200 Successful</font></font></b></td>
196	</tr>
197
198	<tr>
199	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>201</font></font></b></td>
200	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>201 Created</font></font></b></td>
201	</tr>
202
203	<tr>
204	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>202</font></font></b></td>
205	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>202 Accepted</font></font></b></td>
206	</tr>
207
208	<tr>
209	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>203</font></font></b></td>
210	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>203 Non-Authorative Information</font></font></b></td>
211	</tr>
212
213	<tr>
214	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>204</font></font></b></td>
215	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>204 No Content</font></font></b></td>
216	</tr>
217
218	<tr>
219	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>205</font></font></b></td>
220	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>205 Reset Content</font></font></b></td>
221	</tr>
222
223	<tr>
224	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>206</font></font></b></td>
225	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>206 Partial Content</font></font></b>
226	<br><font face="arial"><font size=-1>The partial content success code is
227	issued when the server fulfills a partial GET request. This happens when
228	the client is downloading a multi-part document or part of a larger file. </font></font></td>
229	</tr>
230
231	</table>
232
233	<!-- HTTP 3xx codes -->
234	<a NAME="3"></a><b><font face="arial">3xx class - Redirection</font></b>
235	<br><font face="arial"><font size=-1>This code tells the client that the
236	browser should be redirected to another URL in order to complete the request.
237	This is not an error condition. </font></font>
238
239	<table WIDTH="100%" >
240	<tr>
241	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>300</font></font></b></td>
242	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>300 Multiple Choices</font></font></b></td>
243	</tr>
244
245	<tr>
246	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>301</font></font></b></td>
247	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>301 Moved Permanently</font></font></b></td>
248	</tr>
249
250	<tr>
251	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>302</font></font></b></td>
252	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>302 Moved Temporarily</font></font></b></td>
253	</tr>
254
255	<tr>
256	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>303</font></font></b></td>
257	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>303 See Other</font></font></b></td>
258	</tr>
259
260	<tr>
261	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>304</font></font></b></td>
262	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>304 Not Modified</font></font></b></td>
263	</tr>
264
265	<tr>
266	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>305</font></font></b></td>
267	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>305 Use Proxy</font></font></b></td>
268	</tr>
269
270	</table>
271
272	<!-- HTTP 4xx codes -->
273	<a NAME="4"></a><b><font face="arial">4xx class - Client Error</font></b>
274	<br><font face="arial"><font size=-1>This status code indicates that the
275	client has sent bad data or a malformed request to the server. Client errors
276	are generally issued by the webserver when a client tries to gain access
277	to a protected area using a bad username and password. </font></font>
278
279	<table WIDTH="100%" >
280	<tr>
281	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>400</font></font></b></td>
282	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>400 Bad Request</font></font></b></td>
283	</tr>
284
285	<tr>
286	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>401</font></font></b></td>
287	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>401 Unauthorized</font></font></b></td>
288	</tr>
289
290	<tr>
291	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>402</font></font></b></td>
292	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>402 Payment Required</font></font></b></td>
293	</tr>
294
295	<tr>
296	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>403</font></font></b></td>
297	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>403 Forbidden</font></font></b></td>
298	</tr>
299
300	<tr>
301	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>404</font></font></b></td>
302	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>404 Not Found</font></font></b></td>
303	</tr>
304
305	<tr>
306	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>405</font></font></b></td>
307	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>400 Method Not Allowed</font></font></b></td>
308	</tr>
309
310	<tr>
311	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>406</font></font></b></td>
312	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>400 Not Acceptable</font></font></b></td>
313	</tr>
314
315	<tr>
316	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>407</font></font></b></td>
317	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>400 Proxy Authentication Required</font></font></b></td>
318	</tr>
319
320	<tr>
321	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>408</font></font></b></td>
322	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>400 Request Timeout</font></font></b></td>
323	</tr>
324
325	<tr>
326	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>409</font></font></b></td>
327	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>409 Conflict</font></font></b></td>
328	</tr>
329
330	<tr>
331	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>410</font></font></b></td>
332	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>410 Gone</font></font></b></td>
333	</tr>
334
335	<tr>
336	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>411</font></font></b></td>
337	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>411 Length Required</font></font></b></td>
338	</tr>
339
340	<tr>
341	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>412</font></font></b></td>
342	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>412 Precondition Failed</font></font></b></td>
343	</tr>
344
345	<tr>
346	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>413</font></font></b></td>
347	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>413 Request Entity Too Long</font></font></b></td>
348	</tr>
349
350	<tr>
351	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>414</font></font></b></td>
352	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>414 Request-URI Too Long</font></font></b></td>
353	</tr>
354
355	<tr>
356	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>415</font></font></b></td>
357	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>415 Unsupported Media Type</font></font></b></td>
358	</tr>
359
360	</table>
361
362	<!-- HTTP 5xx codes -->
363	<a NAME="5"></a><b><font face="arial">5xx class - Server Error</font></b>
364	<br><font face="arial"><font size=-1>This status code indicates that the
365	client's request couldn't be succesfully processed due to some internal
366	error in the web server. These error codes may indicate something is seriously
367	wrong with the web server. </font></font>
368
369	<table WIDTH="100%" >
370	<tr>
371	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>500</font></font></b></td>
372	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>500 Internal Server Error</font></font></b>
373	<br><font face="arial"><font size=-1>An internal server error has caused
374	the server to abort your request. This is an error condition that may also
375	indicate a misconfiguration with the web server. However, the most common
376	reason for 500 server errors is when you try to execute a script that has
377	syntax errors. </font></font></td>
378	</tr>
379
380	<tr>
381	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>501</font></font></b></td>
382	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>501 Not Implemented</font></font></b>
383	<br><font face="arial"><font size=-1>This code is generated by a webserver
384	when the client requests a service that is not implemented on the server.
385	Typically, not implemented codes are returned when a client attempts to
386	POST data to a non-CGI (ie, the form action tag refers to a non-executable
387	file). </font></font></td>
388	</tr>
389
390	<tr>
391	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>502</font></font></b></td>
392	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>502 Bad Gateway</font></font></b>
393	<br><font face="arial"><font size=-1>The server, when acting as a proxy,
394	issues this response when it receives a bad response from an upstream or
395	support server. </font></font></td>
396	</tr>
397
398	<tr>
399	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>503</font></font></b></td>
400	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>503 Service Unavailable</font></font></b>
401	<br><font face="arial"><font size=-1>The web server is too busy processing
402	current requests to listen to a new client. This error represents a serious
403	problem with the webserver (normally solved with a reboot). </font></font></td>
404	</tr>
405
406	<tr>
407	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>504</font></font></b></td>
408	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>504 Gateway Timeout</font></font></b>
409	<br><font face="arial"><font size=-1>Gateway timeouts are normally issued
410	by proxy servers when an upstream or support server doesn't respond to
411	a request in a timely fashion. </font></font></td>
412	</tr>
413
414	<tr>
415	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>505</font></font></b></td>
416	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>505 HTTP Version Not Supported</font></font></b>
417	<br><font face="arial"><font size=-1>The server issues this status code
418	when a client tries to talk using an HTTP protocol that the server doesn't
419	support or is configured to ignore.</font></font></td>
420	</tr>
421
422	</table>
423	</td>
424
425	<td ALIGN=LEFT VALIGN=TOP></td>
426	</tr>
427	</table>
428	<br>
429
430	<hr>
431
432	<a name="SMTP"><b>SMTP Status Codes</b><a>:<br>
433
434	SMTP status codes are returned by mail servers to indicate the status of a sending/receiving mail.
435	The status code depends on mail server and preprocessor used to analyze log file.<br>
436	All codes that are failure codes are isolated by AWStats in the SMTP Status report chart,
437	enabled by the directives <a href="awstats_config.html#Show">ShowSMTPErrorsStats</a> in AWStats
438	config file. You can decide which codes are successfull mail transfer that should not appear
439	in this chart with the <a href="awstats_config.html#ValidSMTPCodes">ValidSMTPCodes</a> directive.<br>
440	Here are values reported for most mail servers (This should also be values when mail log file
441	is preprocessing with maillogconvert.pl).<br>
442	SMTP Errors are classified in 3 categories:<br>
443	<ul>
444	<li><font face="arial"><font size=-1><a href="#SMTP23">2xx/3xx - successful</a></font></font></li>
445	<li><font face="arial"><font size=-1><a href="#SMTP4">4xx - failure, asking sender to try later</a></font></font></li>
446	<li><font face="arial"><font size=-1><a href="#SMTP5">5xx - permanent failure</a></font></font></li>
447	</ul>
448
449
450	<table WIDTH="90%">
451	<tr><td VALIGN=TOP BGCOLOR="#DADADA">
452
453	<!-- SMTP 2xx/3xx -->
454
455	<a NAME="SMTP23"></a><b><font face="arial">2xx/3xx class - Success</font></b>
456	<br><font face="arial"><font size=-1>
457	They are SMTP protocols successfull answers
458	</font></font>
459
460	<table WIDTH="100%">
461	<tr>
462	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>200</font></font></b></td>
463	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>200 Non standard success response</font></font></b>
464	<br><font face="arial"><font size=-1>Non standard success response</font></font></td>
465	</tr>
466	<tr>
467	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>211</font></font></b></td>
468	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>211 System status, or system help reply</font></font></b>
469	<br><font face="arial"><font size=-1>System status, or system help reply</font></font></td>
470	</tr>
471	<tr>
472	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>214</font></font></b></td>
473	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>214 Help message</font></font></b>
474	<br><font face="arial"><font size=-1>Help message</font></font></td>
475	</tr>
476	<tr>
477	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>220</font></font></b></td>
478	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>220 <domain> Service ready</font></font></b>
479	<br><font face="arial"><font size=-1><domain> Service ready</font></font></td>
480	</tr>
481	<tr>
482	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>221</font></font></b></td>
483	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>221 <domain> Service closing transmission channel</font></font></b>
484	<br><font face="arial"><font size=-1><domain> Service closing transmission channel</font></font></td>
485	</tr>
486	<tr>
487	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>250</font></font></b></td>
488	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>250 Requested mail action taken and completed</font></font></b>
489	<br><font face="arial"><font size=-1>Your ISP mail server have successfully executes a command and the DNS is reporting a positive delivery.</font></font></td>
490	</tr>
491	<tr>
492	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>251</font></font></b></td>
493	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>251 User not local: will forward to <forward-path></font></font></b>
494	<br><font face="arial"><font size=-1>Your message to a specified email address is not local to the mail server, but it will accept and forward the message to a different recipient email address.</font></font></td>
495	</tr>
496	<tr>
497	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>252</font></font></b></td>
498	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>252 Recipient cannot be verified</font></font></b>
499	<br><font face="arial"><font size=-1>Recipient cannot be verified but mail server accepts the message and attempts delivery</font></font></td>
500	</tr>
501	<tr>
502	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>354</font></font></b></td>
503	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>354 Start mail input and end with <CRLF>.<CRLF></font></font></b>
504	<br><font face="arial"><font size=-1>Indicates mail server is ready to accept the message or instruct your mail client to send the message body after the mail server have received the message headers.</font></font></td>
505	</tr>
506
507	</table>
508
509
510	<!-- SMTP 4xx -->
511
512	<a NAME="SMTP4"></a><b><font face="arial">4xx class - Temporary Errors</font></b>
513	<br><font face="arial"><font size=-1>
514	Those codes are temporary error message. They are used to tell client sender that
515	an error occured but he can try to solve it but trying again, so in most cases, clients that
516	receive such codes will keep the mail in their queue and will try again later.<br>
517	</font></font>
518
519	<table WIDTH="100%" >
520	<tr>
521	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>421</font></font></b></td>
522	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>421 <domain> Service not available, closing transmission channel</font></font></b>
523	<br><font face="arial"><font size=-1>This may be a reply to any command if the service knows it must shut down.</font></font></td>
524	</tr>
525	<tr>
526	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>450</font></font></b></td>
527	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>450 Requested mail action not taken: mailbox busy or access denied</font></font></b>
528	<br><font face="arial"><font size=-1>Your ISP mail server indicates that an email address does not exist or the mailbox is busy. It could be the network connection went down while sending, or it could also happen if the remote mail server does not want to accept mail from you for some reason i.e. (IP address, From address, Recipient, etc.)</font></font></td>
529	</tr>
530	<tr>
531	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>451</font></font></b></td>
532	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>451 Requested mail action aborted: error in processing</font></font></b>
533	<br><font face="arial"><font size=-1>Your ISP mail server indicates that the mailing has been interrupted, usually due to overloading from too many messages or transient failure is one in which the message sent is valid, but some temporary event prevents the successful sending of the message. Sending in the future may be successful.</font></font></td>
534	</tr>
535	<tr>
536	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>452</font></font></b></td>
537	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>452 Requested mail action not taken: insufficient system storage</font></font></b>
538	<br><font face="arial"><font size=-1>Your ISP mail server indicates, probable overloading from too many messages and sending in the future may be successful.</font></font></td>
539	</tr>
540	<tr>
541	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>453</font></font></b></td>
542	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>453 Too many messages</font></font></b>
543	<br><font face="arial"><font size=-1>Some mail servers have the option to reduce the number of concurrent connection and also the number of messages sent per connection. If you have a lot of messages queued up it could go over the max number of messages per connection. To see if this is the case you can try submitting only a few messages to that domain at a time and then keep increasing the number until you find the maximum number accepted by the server.</font></font></td>
544	</tr>
545
546	</table>
547
548	<!-- SMTP 5xx -->
549
550	<a NAME="SMTP5"></a><b><font face="arial">5xx class - Permanent Errors</font></b>
551	<br><font face="arial"><font size=-1>
552	This are permanent error codes. Mail transfer is definitly a failure. No other try will be done.
553	</font></font>
554
555	<table WIDTH="100%" >
556	<tr>
557	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>500</font></font></b></td>
558	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>500 Syntax error, command unrecognized or command line too long</font></font></b>
559	</tr>
560	<tr>
561	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>501</font></font></b></td>
562	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>501 Syntax error in parameters or arguments</font></font></b>
563	</tr>
564	<tr>
565	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>502</font></font></b></td>
566	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>502 Command not implemented</font></font></b>
567	</tr>
568	<tr>
569	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>503</font></font></b></td>
570	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>503 Server encountered bad sequence of commands</font></font></b>
571	</tr>
572	<tr>
573	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>504</font></font></b></td>
574	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>504 Command parameter not implemented</font></font></b>
575	</tr>
576	<tr>
577	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>521</font></font></b></td>
578	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>521 <domain> does not accept mail or closing transmission channel</font></font></b>
579	<br><font face="arial"><font size=-1>You must be pop-authenticated before you can use this SMTP server and you must use your mail address for the Sender/From field.</font></font></td>
580	</tr>
581	<tr>
582	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>530</font></font></b></td>
583	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>530 Access denied</font></font></b>
584	<br><font face="arial"><font size=-1>A sendmailism ?</font></font></td>
585	</tr>
586	<tr>
587	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>550</font></font></b></td>
588	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>550 Requested mail action not taken (Relaying not allowed, Unknown recipient user, ...)</font></font></b>
589	<br><font face="arial"><font size=-1>Sending an email to recipients outside of your domain are not allowed or your mail server does not know that you have access to use it for relaying messages and authentication is required. Or to prevent the sending of SPAM some mail servers will not allow (relay) send mail to any e-mail using another company�s network and computer resources.</font></font></td>
590	</tr>
591	<tr>
592	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>551</font></font></b></td>
593	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>551 User not local: please try <forward-path> or Invalid Address: Relay request denied</font></font></b>
594	</tr>
595	<tr>
596	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>552</font></font></b></td>
597	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>552 Requested mail action aborted: exceeded storage allocation</font></font></b>
598	<br><font face="arial"><font size=-1>ISP mail server indicates, probable overloading from too many messages.</font></font></td>
599	</tr>
600	<tr>
601	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>553</font></font></b></td>
602	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>553 Requested mail action not taken: mailbox name not allowed</font></font></b>
603	<br><font face="arial"><font size=-1>Some mail servers have the option to reduce the number of concurrent connection and also the number of messages sent per connection. If you have a lot of messages queued up (being sent) for a domain, it could go over the maximum number of messages per connection and/or some change to the message and/or destination must be made for successful delivery.</font></font></td>
604	</tr>
605	<tr>
606	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>554</font></font></b></td>
607	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>554 Requested mail action rejected: access denied</font></font></b>
608	</tr>
609	<tr>
610	<td width=80 valign=top align=center BGCOLOR="#EEEEEE"><b><font face="arial"><font size=-1>557</font></font></b></td>
611	<td VALIGN=TOP BGCOLOR="#EEEEFF"><b><font face="arial"><font size=-1>557 Too many duplicate messages</font></font></b>
612	<br><font face="arial"><font size=-1>Resource temporarily unavailable Indicates (probable) that there is some kind of anti-spam system on the mail server.</font></font></td>
613	</tr>
614	<!--
615	# Postfix code for access_map_reject_code (postfix default=554) with access_map_reject_code rule
616	'570'=>'Access denied: access_map violation (on SMTP client or HELO hostname, sender or recipient email address)',
617	# Postfix code for maps_rbl_reject_code (postfix default=554) with maps_rbl_code rule
618	'571'=>'Access denied: SMTP client listed in RBL',
619	# Postfix code for relay_domains_reject_code (postfix default=554) with relay_domains_reject rule
620	'572'=>'Access denied: Relay not authorized or not local host not a gateway',
621	# Postfix code for unknown_client_reject_code (postfix default=450) with reject_unknown_client rule
622	'573'=>'Access denied: Unknown SMTP client hostname (without DNS A or MX record)',
623	# Postfix code for invalid_hostname_reject_code (postfix default=501) with reject_invalid_hostname rule
624	'574'=>'Access denied: Bad syntax for client HELO hostname (Not RFC compliant)',
625	# Postfix code for reject_code (postfix default=554) with smtpd_client_restrictions
626	'575'=>'Access denied: SMTP client hostname rejected',
627	# Postfix code for unknown_address_reject_code (postfix default=450) with reject_unknown_sender_domain or reject_unknown_recipient_domain rule
628	'576'=>'Access denied: Unknown domain for sender or recipient email address (without DNS A or MX record)',
629	# Postfix code for unknown_hostname_reject_code (postfix default=501) with reject_unknown_hostname rule
630	'577'=>'Access denied: Unknown client HELO hostname (without DNS A or MX record)',
631	# Postfix code for non_fqdn_reject_code (Postfix default=504) with reject_non_fqdn_hostname, reject_non_fqdn_sender or reject_non_fqdn_recipient rule
632	'578'=>'Access denied: Invalid domain for client HELO hostname, sender or recipient email address (not FQDN)',
633	-->
634	</table>
635
636	<td ALIGN=LEFT VALIGN=TOP></td>
637	</tr>
638	</table>
639
640
641
642	<br><hr>
643
644	<script language=javascript>
645	var date='$Date: 2008/09/29 19:28:23 $';
646	document.writeln("Last revision: "+date);
647	</script>
648
649	</body>
650	</html>

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