dovecot - Sep 2010 - fetchmail and lmtp -> auth crashing

Hi,

while trying to get new mails into dovecot 2.0.1 via fetchmail and lmtp,
auth process crashes:

Sep  7 19:55:58 oldbox dovecot: lmtp(29944): Error: userdb
lookup(heini at localhost): Disconnected unexpectedly
Sep  7 19:55:58 oldbox fetchmail[29928]: Nachricht USER at ISP:1 von 2 wird
gelesen (2204 Bytes im Nachrichtenkopf) (Log-Meldung unvollst?ndig)
Sep  7 19:55:58 oldbox fetchmail[29928]: LMTP-Fehler: 451 4.3.0
<heini at localhost> Internal error occurred. Refer to server log for more
information.
Sep  7 19:55:58 oldbox dovecot: master: Error: service(auth): child
29949 killed with signal 11 (core not dumped)
Sep  7 19:55:58 oldbox dovecot: master: Error: service(auth): command
startup failed, throttling

# doveconf -n
# 2.0.1 (a05834588ffb): /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-5-486 i586 Debian squeeze/sid
auth_debug = yes
auth_gssapi_hostname = oldbox.altum.de
auth_krb5_keytab = /etc/krb5.keytab
auth_mechanisms = gssapi
auth_verbose = yes
disable_plaintext_auth = no
listen = *
mail_location = maildir:~/mail
managesieve_notify_capability = mailto
managesieve_sieve_capability = comparator-i;octet
comparator-i;ascii-casemap fileinto reject envelope encoded-character
vacation subaddress comparator-i;ascii-numeric relational regex
imap4flags copy include variables body enotify environment mailbox date
plugin {
  sieve = ~/.dovecot.sieve
  sieve_dir = ~/sieve
}
protocols = imap lmtp
service lmtp {
  unix_listener lmtp {
    mode = 0666
    user = fetchmail
  }
}
ssl = no
ssl_cert = </etc/ssl/certs/dovecot.pem
ssl_key = </etc/ssl/private/dovecot.pem
userdb {
  args = uid=vmail gid=vmail home=/var/vmail/%u
  driver = static
}

fetchmailrc:

set postmaster "postmaster"
set nobouncemail
set no spambounce
set properties ""
set daemon 60
set syslog
poll ISP with proto IMAP
       user 'USER' there with password 'password' is
'heini' here
options stripcr fetchsizelimit 0 ssl expunge 500 smtphost
/var/run/dovecot/lmtp

Any ideas what could be wrong?

Thanks...

	Dirk

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On Tue, 2010-09-07 at 20:03 +0200, Dirk Heinrichs wrote:
> Sep  7 19:55:58 oldbox dovecot: master: Error: service(auth): child
> 29949 killed with signal 11 (core not dumped) 
Can you get gdb backtrace? For example one easy way would be to attach
gdb into a running auth process:

gdb -p `pidof dovecot/auth`
cont
<make it crash>
bt full