On 30. Mar 2020, at 14.36, Andi Krischer <a...@michaelpelzer.de> wrote: > >>> This is what the log says in the moment of crashing: >>> dovecot: lmtp(53852): Panic: Module context mail_crypt_user_module missing >>> *** backtrace *** (see: https://pastebin.com/YCiFtxmy) >> >> It shows mailbox_free() in the backtrace, so it's probably crashing in >> mail_crypt_mailbox_close()'s MAIL_CRYPT_CONTEXT(box). But looking at the >> code, I can't see how that could be possible. Maybe there is some kind of >> memory corruption or something. >> >>> dovecot: lmtp(53852): Fatal: master: service(lmtp): child 53852 killed with >>> signal 6 (core dumps disabled - >>> https://dovecot.org/bugreport.html#coredumps) >> >> Could you get core dumps enabled? See the link. And from the core dump send >> at least: >> >> bt full >> fr 6 (or maybe 5 or 7, whichever makes the following command work) >> p *box >> >> Also please send your doveconf -n output. > > > Core dump: https://pastebin.com/g4VkMXsT (hope this is everything - I’m not > that familiar with core dumps…)
It's missing debug symbols. Are you using binaries from repo.dovecot.org <http://repo.dovecot.org/>? You'd need to install dovecot-dbg package to get more useful output. And/or assuming it's installed from repo.dovecot.org <http://repo.dovecot.org/>, it would help if you could send me privately the core file and related libs (the core could contain some sensitive info like pieces of emails): dovecot-sysreport --core /usr/lib/dovecot/lmtp /path/to/core
