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-<td width="30%" align="right">$Date: 2003/10/10 10:55:46 $</td>
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<h1 class="c1">Fetchmail Bugs and To-Do Items</h1>
+<p>Note that there is a separate <a href="TODO.txt">TODO.txt</a> document of
+different content than this.</p>
+
<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>Feature request from "Ralf G. R. Bergs" <rabe@RWTH-Aachen.DE> "When
-fetchmail downloads mail and Exim+SpamAssassin detecs an incoming
-message as spam, fetchmail tries to bounce it. Unfortunately it uses
-an incorrect hostname as part of the sender address (I've an internal
-LAN with private hostnames, plus an official IP address and hostname,
-and fetchmail picks the internal name of my host.) So I'd like to have
-a config statement that allows me to explicitly set a senderaddress
-for bounce messages."
+<h2>Serious</h2>
+
+<p>Let IMAP code use UID and UIDVALIDITY rather than relying on flags
+that everyone can alter.</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>
+<h2>Normal</h2>
+
+<p>POP3 hang when polling mail with NUL char that is rejected (David
+Greaves) <a
+ href="https://lists.berlios.de/pipermail/fetchmail-devel/2004-October/000154.html">https://lists.berlios.de/pipermail/fetchmail-devel/2004-October/000154.html</a></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
it's very likely in the BIND libraries. Someone should go in with a
debugger and check this.</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.</p>
+
+<h2>Cosmetic</h2>
+
+<p>Alan Munday suggests message change MULTIDROP without ENVELOPE:</p>
+<pre>
+fetchmail: warning: MULTIDROP configuration for pop.example.org requires the envelope option to be set!
+fetchmail: warning: Check ENVELOPE option if fetchmail sends all mail to postmaster!
+</pre>
+
+<h2>Feature requests/Wishlist items</h2>
+
+<p>Feature request from "Ralf G. R. Bergs" <rabe@RWTH-Aachen.DE> "When
+fetchmail downloads mail and Exim+SpamAssassin detecs an incoming
+message as spam, fetchmail tries to bounce it. Unfortunately it uses
+an incorrect hostname as part of the sender address (I've an internal
+LAN with private hostnames, plus an official IP address and hostname,
+and fetchmail picks the internal name of my host.) So I'd like to have
+a config statement that allows me to explicitly set a senderaddress
+for bounce messages."</p>
+
<p>In the SSL support, add authentication of Certifying Authority
(Is this a Certifying Authority we recognize?).</p>
-<p>Debian wishlist item 181157: ssl key learning for self-signed certificates.</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
+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>Maybe refuse multidrop configuration unless "envelope" is _explicitly_
configured (and tell the user he needs to configure the envelope
-option) and change the envelope default to nil. This would
+option) and change the envelope default to nil. This would
prevent a significant class of shoot-self-in-foot problems.</p>
<p>Given the above change, perhaps treat a delivery as "temporarily
found. (This is so you don't lose mail if you configure the wrong
envelope header.)</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.</p>
+<p>Matthias Andree writes:</p>
-<hr />
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+<blockquote>
+<p>NOTE that the current code need optimization, if I have
+unseen articles 3 and 47, fetchmail will happily request LIST for
+articles 3...47 rather than just 3 and 47. In cases where the message
+numbers are far apart, this involves considerable overhead - which
+could be alleviated by pipelining the list commands, which needs
+either asynchronous reading while sending the commands, or knowing the
+send buffer, to avoid deadlocks. Unfortunately, I don't have the time
+to delve deeper into the code and look around.</p>
+
+<p>Note that such a pipelining function would be of universal use, so it
+should not be in pop3.c or something. I'd think the best approach is to
+call a "sender" function with the command and a callback, and the sender
+will call the receiver when the send buffer is full and call the
+callback function for each reply received.</p>
+<p>See the ESMTP PIPELINING RFC for details on the deadlock avoidance
+requirements.</p>
+</blockquote>
+
+<hr />
<br clear="left" />
-<address>Eric S. Raymond <a href="mailto:esr@thyrsus.com"><esr@thyrsus.com></a></address>
+<address>-2003 Eric S. Raymond <a
+ href="mailto:esr@thyrsus.com"><esr@thyrsus.com></a><br />
+2004- Matthias Andree <a
+ href="mailto:matthias.andree@gmx.de"><matthias.andree@gmx.de></a></address>
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