Hello Again, now after some more reading of the logfiles i found this: lmtpunix[2882]: duplicate_check: <266B5D52-DBBE-4CEE-8B53-1A07C357CBA3@xxxxxxxxxxxxx>-florianhelms@xxxxxxxxxxxxx .bluemaex.sieve. 0 lmtpunix[3774]: FATAL: couldn't exec() sendmail lmtpunix[2882]: sieve runtime error for bluemaex id <266B5D52-DBBE-4CEE-8B53-1A07C357CBA3@xxxxxxxxxxxxx>: Redirect: Sendmail process terminated normally, exit status 75 lmtpunix[2882]: DBERROR ^CÏ^H^H: db4 lmtpunix[2882]: DBERROR: error fetching <266B5D52-DBBE-4CEE-8B53-1A07C357CBA3@xxxxxxxxxxxxx>: Invalid argument I talked to the user and we discovered that this is an sieve rule that forwards an incoming mail to another user outside my mail system. This is followed up by more errors like this one: lmtpunix[2882]: IOERROR: fstating sieve script /mail/imap/sieve/f/fhele/defaultbc: No such file or directory lmtpunix[2882]: DBERROR ^CÏ^H^H: db4 lmtpunix[2882]: DBERROR: error fetching <4393166.1165581121480.ecMessenger@xxxxxxxxxxxxxxxxxxx>: Invalid argument lmtpunix[2882]: duplicate_check: error looking up <4393166.1165581121480.ecMessenger@xxxxxxxxxxxxxxxxxxx>/user.fhele: cyrusdb error It ends up with an lmtpd process running at 100% CPU and the cyrus does not answer on any port (pop3/imaps). As the only solution i restarted cyrus and everything works again. For now the user deactivated this rule and it seems to work until now. But he told me that this rule worked for a long time. So what has this rule to do with cyrus database and why is it getting corrupt? Thanks Greetings Andreas Kimpfler ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html