[pkg-fetchmail-maint] Bug#356673: fetchmail: stops when cannot fetch from one mailbox

[Francesco Potorti`]

Package: fetchmail
Version: 6.3.2-2
Severity: important

I fetch mail from more than one mailbox, with a .fetchmailrc like this:

===File ~/.fetchmailrc======================================
# Poll every given seconds
set daemon 9

set postmaster pot at fly.isti.cnr.it
set logfile /home/pot/Mail/tmp/fetchmaillog

defaults protocol APOP
	tracepolls
	user pot
	pass xxxxxx
	fetchall
	antispam 501

poll pop.isti.cnr.it:
	fetchlimit 2

poll pop.yyyy.it:
	interval 1200
	user xxxx at yyyy.it
	pass xxxx
============================================================

Last night it happened that the mailbox at pop.yyyy.it was deleted, so
fetchmail received an error, which was traced in the log like this:

fetchmail: Authorization failure on xxxx at yyyy.it@pop.yyyy.it (previously authorized)
fetchmail: SMTP error: 550 rejected: unknown local part in sender <FETCHMAIL-DAEMON at pot.isti.cnr.it>

The first line is the error that fetchmail got from the provider because
the mailbox had been deleted.  The second line is how exim rejected the
error message that fetchmail sent to postmaster, probably because exim
does not believe that a user FETCHMAIL-DAEMON exist.

The problem is that, after the failure, fetchmail did not get mail any
more from the other mailbox until I stopped and restarted it, after
commenting the second provider's stanza.

I can reproduce this problem by uncommenting the second provider's stanza.

-- System Information:
Debian Release: testing/unstable
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'testing-proposed-updates')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.4.30-pre2-pr-hrt-1kHz-1
Locale: LANG=C, LC_CTYPE=it_IT at euro (charmap=ANSI_X3.4-1968) (ignored: LC_ALL set to C)

Versions of packages fetchmail depends on:
ii  adduser                       3.80       Add and remove users and groups
ii  debianutils                   2.15.2     Miscellaneous utilities specific t
ii  gettext                       0.14.5-2   GNU Internationalization utilities
ii  libc6                         2.3.5-13   GNU C Library: Shared libraries an
ii  libssl0.9.8                   0.9.8a-7   SSL shared libraries

Versions of packages fetchmail recommends:
ii  ca-certificates               20050804   Common CA Certificates PEM files

-- no debconf information