On 24.4.2012, at 20.41, Hadi Salem wrote: > Apr 24 20:25:46 lda(ja...@example.com): Fatal: > setgid(5000(vmail) from userdb lo > > okup) failed with > euid=8(mail), gid=12(mail), egid=12(mail): Operation not permi > > tted (This binary should probably be called with process group set to > 5000(vmail > > ) instead of 12(mail))
Configure your MTA to run dovecot-lda as vmail instead of as mail.