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@@ -1,103 +1,118 @@ -<!DOCTYPE HTML PUBLIC "-//W3O//DTD W3 HTML 4.0//EN"> -<HTML> -<HEAD> -<link rev=made href="mailto:esr@snark.thyrsus.com"> -<meta name="description" content="Known bugs and to-do items in fetchmail"> -<meta name="keywords" content="fetchmail, POP3, IMAP, bugs"> -<TITLE>Fetchmail Bugs and To-Do Items</TITLE> -</HEAD> -<BODY> -<table width="100%" cellpadding=0 summary="Canned page header"><tr> -<td width="30%">Back to <a href="/~esr">Eric's Home Page</a> -<td width="30%" align=center>Up to <a href="/~esr/sitemap.html">Site Map</a> -<td width="30%" align=right>$Date: 2002/07/28 10:21:18 $ -</tr></table> -<HR> -<H1 ALIGN=CENTER>Fetchmail Bugs and To-Do Items</H1> - -<p>I try to respond to urgent bug reports in a timely way. But fetchmail -is now pretty mature and I have many other projects, so I don't -personally chase obscure or marginal problems. Help with any of these -will be cheerfully accepted. - -<p>Matthias Andree writes: I believe fetchmail should not iterate over -protocols when we have a DNS failure. +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" + "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml"> +<head> +<link rev="made" href="mailto:esr@snark.thyrsus.com" /> +<meta name="description" +content="Known bugs and to-do items in fetchmail" /> +<meta name="keywords" content="fetchmail, POP3, IMAP, bugs" /> +<title>Fetchmail Bugs and To-Do Items</title> +<style type="text/css"> +/*<![CDATA[*/ + h1.c1 {text-align: center} +/*]]>*/ +</style> +</head> +<body> +<table width="100%" cellpadding="0" summary="Canned page header"> +<tr> +<td width="30%">Back to <a href="/~esr">Eric's Home Page</a></td> +<td width="30%" align="center">Up to <a href="/~esr/sitemap.html">Site Map</a></td> +<td width="30%" align="right">$Date: 2002/07/28 10:21:47 $</td> +</tr> +</table> + +<hr /> +<h1 class="c1">Fetchmail Bugs and To-Do Items</h1> + +<p>I try to respond to urgent bug reports in a timely way. But +fetchmail is now pretty mature and I have many other projects, so I +don't personally chase obscure or marginal problems. Help with any +of these will be cheerfully accepted.</p> + +<p>Matthias Andree writes: I believe fetchmail should not iterate +over protocols when we have a DNS failure.</p> <pre> -> BTW, I found a bug in 5.9.7: -> ./fetchmail -Nvd0 jads.asdkjaldsf.com -> Enter password for emma@jads.asdkjaldsf.com: -> fetchmail: 5.9.7 querying jads.asdkjaldsf.com (protocol auto) at Mit 20 -> Feb 2002 06:35:07 CET: poll started -> fetchmail: 5.9.7 querying jads.asdkjaldsf.com (protocol IMAP) at Mit 20 -> Feb 2002 06:35:07 CET: poll started -> fetchmail: couldn't find canonical DNS name of jads.asdkjaldsf.com -> fetchmail: 5.9.7 querying jads.asdkjaldsf.com (protocol IMAP) at Mit 20 -> Feb 2002 06:35:08 CET: poll completed -> fetchmail: 5.9.7 querying jads.asdkjaldsf.com (protocol POP3) at Mit 20 -> Feb 2002 06:35:08 CET: poll started -> fetchmail: couldn't find canonical DNS name of jads.asdkjaldsf.com -> fetchmail: 5.9.7 querying jads.asdkjaldsf.com (protocol POP3) at Mit 20 -> Feb 2002 06:35:08 CET: poll completed -> fetchmail: 5.9.7 querying jads.asdkjaldsf.com (protocol auto) at Mit 20 -> Feb 2002 06:35:08 CET: poll completed -> fetchmail: Query status=11 (DNS) -> fetchmail: normal termination, status 11 +> BTW, I found a bug in 5.9.7: +> ./fetchmail -Nvd0 jads.asdkjaldsf.com +> Enter password for emma@jads.asdkjaldsf.com: +> fetchmail: 5.9.7 querying jads.asdkjaldsf.com (protocol auto) at Mit 20 +> Feb 2002 06:35:07 CET: poll started +> fetchmail: 5.9.7 querying jads.asdkjaldsf.com (protocol IMAP) at Mit 20 +> Feb 2002 06:35:07 CET: poll started +> fetchmail: couldn't find canonical DNS name of jads.asdkjaldsf.com +> fetchmail: 5.9.7 querying jads.asdkjaldsf.com (protocol IMAP) at Mit 20 +> Feb 2002 06:35:08 CET: poll completed +> fetchmail: 5.9.7 querying jads.asdkjaldsf.com (protocol POP3) at Mit 20 +> Feb 2002 06:35:08 CET: poll started +> fetchmail: couldn't find canonical DNS name of jads.asdkjaldsf.com +> fetchmail: 5.9.7 querying jads.asdkjaldsf.com (protocol POP3) at Mit 20 +> Feb 2002 06:35:08 CET: poll completed +> fetchmail: 5.9.7 querying jads.asdkjaldsf.com (protocol auto) at Mit 20 +> Feb 2002 06:35:08 CET: poll completed +> fetchmail: Query status=11 (DNS) +> fetchmail: normal termination, status 11 </pre> -<p>IDLE is not fully implemented. Fetchmail does not time out the idle connection -every 30 minutes or less as required by RFC2177. Some servers (including UW IMAPD -compiled without the MICROSOFT_BRAIN_DAMAGE option, as is the default) will drop -the connection after 30 minutes, resulting in a spurious socket error in your logs -and no mail being picked up until the next poll cycle. +<p>IDLE is not fully implemented. Fetchmail does not time out the +idle connection every 30 minutes or less as required by RFC2177. +Some servers (including UW IMAPD compiled without the +MICROSOFT_BRAIN_DAMAGE option, as is the default) will drop the +connection after 30 minutes, resulting in a spurious socket error +in your logs and no mail being picked up until the next poll +cycle.</p> -<p>The UIDL code seems rather broken. It's a nasty swamp. Somebody who -actually uses it should fix it -- every time I try I seem to make -things worse.... +<p>The UIDL code seems rather broken. It's a nasty swamp. Somebody +who actually uses it should fix it -- every time I try I seem to +make things worse....</p> <p>POP3 can't presently distinguish a wedged or down server from an -authentication failure. Possible fix: after issuing a PASS -command. wait 300 (xx) seconds for a "-ERR" or a "+OK" . If nothing -comes back, retry at the next poll event and generate no errors. If we -get an -ERR then log an authentication failure. - -<p>It has been reported that multidrop name matching fails when the name -to be matched contains a Latin-1 umlaut. Dollars to doughnuts this is -some kind of character sign-extension problem. Trouble is, it's very -likely in the BIND libraries. Someone should go in with a debugger -and check this. - -<p>In the SSL support, add authentication of Certifying Authority (Is this -a Certifying Authority we recognize?). - -<p>Laszlo Vecsey writes: "I believe qmail uses a technique of writing -temporary files to nfs, and then moving them into place to ensure that -they're written. Actually a hardlink is made to the temporary file and -the destination name in a new directory, then the first one is -unlinked.. maybe a combination of this will help with the fetchmail -lock file." - -<p>Move everything to using service strings rather that port numbers, so we -can get rid of ENABLE_INET6 everywhere but in SockOpen (this will get -rid of the kluge in rcfile_y.y). - -<p>John Summerfield suggests that specifying a localname containing @ -ought to be treated as an smtpname option, with the domain part -removed for other purposes such as local-address matching. +authentication failure. Possible fix: after issuing a PASS command. +wait 300 (xx) seconds for a "-ERR" or a "+OK" . If nothing comes +back, retry at the next poll event and generate no errors. If we +get an -ERR then log an authentication failure.</p> + +<p>It has been reported that multidrop name matching fails when the +name to be matched contains a Latin-1 umlaut. Dollars to doughnuts +this is some kind of character sign-extension problem. Trouble is, +it's very likely in the BIND libraries. Someone should go in with a +debugger and check this.</p> + +<p>In the SSL support, add authentication of Certifying Authority +(Is this a Certifying Authority we recognize?).</p> + +<p>Laszlo Vecsey writes: "I believe qmail uses a technique of +writing temporary files to nfs, and then moving them into place to +ensure that they're written. Actually a hardlink is made to the +temporary file and the destination name in a new directory, then +the first one is unlinked.. maybe a combination of this will help +with the fetchmail lock file."</p> + +<p>Move everything to using service strings rather that port +numbers, so we can get rid of ENABLE_INET6 everywhere but in +SockOpen (this will get rid of the kluge in rcfile_y.y).</p> + +<p>John Summerfield suggests that specifying a localname containing +@ ought to be treated as an smtpname option, with the domain part +removed for other purposes such as local-address matching.</p> <p>The <a -href="http://bugs.debian.org/cgi-bin/pkgreport.cgi?pkg=fetchmail&archive=no">Debian -bug-tracking page for fetchmail</a> lists other bug reports. - -<HR> -<table width="100%" cellpadding=0 summary="Canned page footer"><tr> -<td width="30%">Back to <a href="/~esr">Eric's Home Page</a> -<td width="30%" align=center>Up to <a href="/~esr/sitemap.html">Site Map</a> -<td width="30%" align=right>$Date: 2002/07/28 10:21:18 $ -</tr></table> - -<br clear=left> -<ADDRESS>Eric S. Raymond <A HREF="mailto:esr@thyrsus.com"><esr@thyrsus.com></A></ADDRESS> -</BODY> -</HTML> +href="http://bugs.debian.org/cgi-bin/pkgreport.cgi?pkg=fetchmail&archive=no"> +Debian bug-tracking page for fetchmail</a> lists other bug +reports.</p> + +<hr /> +<table width="100%" cellpadding="0" summary="Canned page footer"> +<tr> +<td width="30%">Back to <a href="/~esr">Eric's Home Page</a></td> +<td width="30%" align="center">Up to <a href="/~esr/sitemap.html">Site Map</a></td> +<td width="30%" align="right">$Date: 2002/07/28 10:21:47 $</td> +</tr> +</table> + +<br clear="left" /> +<address>Eric S. Raymond <a href="mailto:esr@thyrsus.com"><esr@thyrsus.com></a></address> +</body> +</html> |