[pkg-fetchmail-maint] Bug#554572: fetchmail: delivery to mda fails when fetching mails with only one dot in one line

[Michael Hoefert]

Package: fetchmail
Version: 6.3.9~rc2-4+lenny1
Severity: normal

My mailsystem fetches mails from my provider with fetchmail and delivers the mails to postfix
for local delivery to the postboxes. Sometimes I get mails with only one dot in one line.
If thats short mails the mail only will be truncated at the dot, but if the mails be a little longer
then fetchmail logs an IOERR in maillog and don't delete the mail on pop3-host, but postfix delivers
the at the dot truncated mail. On next poll happens the same and this mail and all following will be
stuck in pop3-postbox.

-------------------------
My /etc/fetchmailrc:

# FetchmailRC
# zum Abholen der Mail beim POP3-Postfach
#
set no bouncemail
poll "server" protocol pop3 user "user" pass "pass" mda "/usr/sbin/sendmail -f %F mailbox" fetchall

----------------------------

----------------------------
extract of mail.info fetchmail started with option -vvv

Nov  5 13:18:55 localhost fetchmail[19680]: Versuche, mit 111.111.111.111/110 zu verbinden...verbunden.
Nov  5 13:18:55 localhost fetchmail[19680]: POP3< +OK <282151484.2619 at domain.de>, POP3 server ready.
Nov  5 13:18:55 localhost fetchmail[19680]: POP3> CAPA
Nov  5 13:18:55 localhost fetchmail[19680]: POP3< +OK Capability list follows
Nov  5 13:18:55 localhost fetchmail[19680]: POP3< USER
Nov  5 13:18:55 localhost fetchmail[19680]: POP3< TOP
Nov  5 13:18:55 localhost fetchmail[19680]: POP3< UIDL
Nov  5 13:18:55 localhost fetchmail[19680]: POP3< EXPIRE NEVER
Nov  5 13:18:55 localhost fetchmail[19680]: POP3< .
Nov  5 13:18:55 localhost fetchmail[19680]: 111.111.111.111: opportunistisches Upgrade auf TLS fehlgeschlagen, versuche Fortsetzung.
Nov  5 13:18:55 localhost fetchmail[19680]: POP3> USER hoefert
Nov  5 13:18:55 localhost fetchmail[19680]: POP3< +OK hoefert is known here.
Nov  5 13:18:55 localhost fetchmail[19680]: POP3> PASS *
Nov  5 13:18:55 localhost fetchmail[19680]: POP3< +OK Welcome! 1 messages (218032 bytes)
Nov  5 13:18:55 localhost fetchmail[19680]: Vorgabe-Ordner wird gewählt oder erneut abgefragt
Nov  5 13:18:55 localhost fetchmail[19680]: POP3> STAT
Nov  5 13:18:55 localhost fetchmail[19680]: POP3< +OK 1 218032
Nov  5 13:18:55 localhost fetchmail[19680]: 1 Nachricht für hoefert bei 111.111.111.111 (218032 Bytes).
Nov  5 13:18:55 localhost fetchmail[19680]: POP3> LIST 1
Nov  5 13:18:55 localhost fetchmail[19680]: POP3< +OK 1 218032
Nov  5 13:18:55 localhost fetchmail[19680]: POP3> RETR 1
Nov  5 13:18:55 localhost fetchmail[19680]: POP3< +OK Here it comes...
Nov  5 13:18:55 localhost fetchmail[19680]: Nachricht hoefert at 111.111.111.111:1 von 1 wird gelesen (218032 Bytes)
Nov  5 13:18:55 localhost fetchmail[19680]: Dabei, From: "Kingspan" <Kingspan at kingspan.net>#015#012 umzuschreibenUmgeschriebene Version ist From: 
"Kingspan" <Kingspan at kingspan.net>#015#012
Nov  5 13:18:55 localhost fetchmail[19680]: Dabei, To: <torbau at domain.de>#015#012 umzuschreibenUmgeschriebene Version ist To: 
<torbau at krummenauer.de>#015#012
Nov  5 13:18:55 localhost fetchmail[19680]: Dabei, Return-Path: Kingspan at kingspan.net#015#012 umzuschreibenUmgeschriebene Version ist Return-Path: 
Kingspan at kingspan.net#015#012
Nov  5 13:18:55 localhost fetchmail[19680]: dabei, auszuliefern mit: /usr/sbin/sendmail -f 'Kingspan at kingspan.net' michael.hoefert.krummenauer.de
Nov  5 13:18:55 localhost postfix/pickup[19202]: 0FF61D2001: uid=111 from=<Kingspan at kingspan.net>
Nov  5 13:18:55 localhost postfix/cleanup[19635]: 0FF61D2001: message-id=<0DA76D766EE54542B82713EE9BD4B06D079C17 at KGRDBMAIL0B.kingspan.net>
Nov  5 13:18:55 localhost fetchmail[19680]: Fehler beim Schreiben des Nachrichtentextes
Nov  5 13:18:55 localhost fetchmail[19680]: POP3> QUIT
Nov  5 13:18:55 localhost fetchmail[19680]: POP3<   l28 level1 lfo19'><a name=3DF></a><![if !supportLists]><b><font =
Nov  5 13:18:55 localhost fetchmail[19680]: MDA-Fehler beim Abholen von hoefert at 111.111.111.111
Nov  5 13:18:55 localhost fetchmail[19680]: 6.3.9-rc2 fragt ab 111.111.111.111 (Protokoll POP3) um Do 05 Nov 2009 13:18:55 CET: Abfrage beendet
Nov  5 13:18:55 localhost fetchmail[19680]: Abfragestatus=6 (IOERR)

-------------------------------------------------------------

For me I found a workaround. I changed the poll-line in fetchmailrc to:

poll "server" protocol pop3 user "user" pass "pass" mda "sed -e '/^.$/../g' | /usr/sbin/sendmail -f %F mailbox" fetchall

then I have two dots in that line, but better than else.
I'm not really sure, if it is a bug in fetchmail or in postfix, but it should not happen.


-- System Information:
Debian Release: 5.0.3
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.26-2-686 (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages fetchmail depends on:
ii  adduser         3.110                    add and remove users and groups
ii  debianutils     2.30                     Miscellaneous utilities specific t
ii  libc6           2.7-18                   GNU C Library: Shared libraries
ii  libcomerr2      1.41.3-1                 common error description library
ii  libkrb53        1.6.dfsg.4~beta1-5lenny1 MIT Kerberos runtime libraries
ii  libssl0.9.8     0.9.8g-15+lenny5         SSL shared libraries
ii  lsb-base        3.2-20                   Linux Standard Base 3.2 init scrip

Versions of packages fetchmail recommends:
ii  ca-certificates               20080809   Common CA certificates

Versions of packages fetchmail suggests:
pn  fetchmailconf                 <none>     (no description available)
ii  postfix [mail-transport-agent 2.5.5-1.1  High-performance mail transport ag
pn  resolvconf                    <none>     (no description available)

-- no debconf information