Hello,

last week and today our dovecot pop3 server stopped responding. Without any other logentries dovecot start to log only this:

Dec 12 09:14:12 mbox1 dovecot: auth: Error: ldap(testuser,192.0.2.110,): ldap_search(base=ou=accounts,dc=example,dc=de filter=(&(|(uid=testuser)(mail=testuser))(!(state=blocked)))) failed: Operations error

For every pop3 Session, ~2000 per Minute ..., over 10 Minutes I send dovecot a SIGTERM. After dovecot was started again, all was fine again.

# doveconf -n http://postmaster.datev.de/tmp/dovecot.conf

The LDAP-Server itself did resond to queries in the same timeframe. I know this because the MTA on the same host was able to deliver messages into mailboxes.

Any hints?

Thanks Andreas

-- Andreas Schulze Internetdienste | P252

DATEV eG 90329 Nürnberg | Telefon +49 911 319-0 | Telefax +49 911 319-3196 E-Mail info @datev.de | Internet www.datev.de Sitz: 90429 Nürnberg, Paumgartnerstr. 6-14 | Registergericht Nürnberg, GenReg Nr.70 Vorstand Prof. Dieter Kempf (Vorsitzender) Dipl.-Kfm. Wolfgang Stegmann (stellvertretender Vorsitzender) Dipl.-Kfm. Michael Leistenschneider Dipl.-Kfm. Dr. Robert Mayr Jörg Rabe v. Pappenheim Dipl.-Vw. Eckhard Schwarzer Vorsitzender des Aufsichtsrates: Reinhard Verholen