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@@ -10,80 +10,63 @@ <table width="100%" cellpadding=0><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: 2001/07/06 01:18:42 $ +<td width="30%" align=right>$Date: 2001/07/31 05:48:06 $ </table> <HR> <H1 ALIGN=CENTER>Fetchmail Bugs and To-Do Items</H1> -I try to respond to urgent bug reports in a timely way. But fetchmail +<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> +will be cheerfully accepted. -Errors in RCPT TO responses aren't handled gracefully. This shows up -if you enable FEATURE(delay_checks, friend) in sendmail, so that you -can accept mail to postmaster from sites otherwise blocked by my -access database. The effect of this feature is that the MAIL FROM: -address is always accepted OK, and any rejection of the sender is -delayed until the RCPT TO: part of the SMTP transaction. This includes -rejects such as 553 for invalid sender address. In this configuration -fetchmail cannot deliver mail with invalid sender addresses, so you'll -get lots of bounce messages when some spammers hit your mailbox (a -pair of bounces every time fetchmail runs; one to FETCHMAIL-DAEMON -generated by sendmail when fetchmail's bounce to the spammer is -rejected, and one postmaster notify for that bounce). The problem is -that fetchmail only recognises the 553 response in reply to MAIL FROM: -and not RCPT TO:, see the unused code near sink.c:690. A really -correct fix would callling a modified version of handle_smtp_error -that doesn't RSET the connection. - -Using LMTP alias with a local name that is not a full name fails horribly +<p>Using LMTP alias with a local name that is not a full name fails horribly (the LMTP port never gets stripped off the name). -The UIDL code seems rather broken. It's a nasty swamp. Somebody who +<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> +things worse.... -POP3 can't presently distinguish a wedged or down server from an +<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> +get an -ERR then log an authentication failure. -SMTP authentication a la RFC 2554 ought to be supported. The Exim +<p>SMTP authentication a la RFC 2554 ought to be supported. The Exim reference has a <a href="http://www.exim.org/exim-html-3.10/doc/html/spec_33.html#SEC705"> -whole chapter on this topic</a>.<p> +whole chapter on this topic</a>. -It has been reported that multidrop name matching fails when the name +<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> +and check this. -In the SSL support, add authentication of Certifying Authority (Is this -a Certifying Authority we recognize?).<p> +<p>In the SSL support, add authentication of Certifying Authority (Is this +a Certifying Authority we recognize?). -Laszlo Vecsey writes: "I believe qmail uses a technique of writing +<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> +lock file." -Move everything to using service strings rather that port numbers, so we +<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> +rid of the kluge in rcfile_y.y). -The <a +<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.<p> +bug-tracking page for fetchmail</a> lists other bug reports. <HR> <table width="100%" cellpadding=0><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: 2001/07/06 01:18:42 $ +<td width="30%" align=right>$Date: 2001/07/31 05:48:06 $ </table> <P><ADDRESS>Eric S. Raymond <A HREF="mailto:esr@thyrsus.com"><esr@thyrsus.com></A></ADDRESS> |