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<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.
<listing>
> 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
</listing>
<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>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>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.
<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.
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<ADDRESS>Eric S. Raymond <A HREF="mailto:esr@thyrsus.com"><esr@thyrsus.com></A></ADDRESS>
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