Ok its not tls related the problem, this is a non tls session: [...] Nov 11 09:44:50 falcone tpop3d[6941]: maildir_new: scanned maildir /var/spool/domains/foo/ user (7 messages) in 0.000s Nov 11 09:44:50 falcone tpop3d[6941]: quit: signal 11 post_fork = 1 Nov 11 09:44:50 falcone tpop3d[6842]: net_loop: child process 6941 killed by signal 11 (shouldn't ha ppen) [..]