Ahoj, 
mam mensi "problem" s dovecotom...
Dovecot funguje, ale stale vidim v logoch, ze ma stale odhlasuje prihlasuje... 
Jan 23 13:53:37  dovecot: imap-login: Login: user=<tomas>, method=PLAIN, rip=::1, lip=::1, mpid=30422, secured, session=<OXIFCXFjVQAAAAAAAAAAAAAAAAAAAAAB>
Jan 23 13:53:37 dovecot: imap(tomas): Disconnected: Logged out in=91 out=887
Jan 23 13:54:37 dovecot: imap-login: Login: user=<tomas>, method=PLAIN, rip=::1, lip=::1, mpid=30436, secured, session=<I8mWDHFjVgAAAAAAAAAAAAAAAAAAAAAB>
Jan 23 13:54:37 dovecot: imap(tomas): Disconnected: Logged out in=91 out=887
Jan 23 13:55:37 dovecot: imap-login: Login: user=<tomas>, method=PLAIN, rip=::1, lip=::1, mpid=30456, secured, session=<1G0sEHFjWAAAAAAAAAAAAAAAAAAAAAAB>
Jan 23 13:55:37 dovecot: imap(tomas): Disconnected: Logged out in=91 out=887
Jan 23 13:56:37 dovecot: imap-login: Login: user=<tomas>, method=PLAIN, rip=::1, lip=::1, mpid=30469, secured, session=<UQG+E3FjWQAAAAAAAAAAAAAAAAAAAAAB>
Jan 23 13:56:37 dovecot: imap(tomas): Disconnected: Logged out in=91 out=887
Jan 23 13:57:37 dovecot: imap-login: Login: user=<tomas>, method=PLAIN, rip=::1, lip=::1, mpid=30482, secured, session=<BahRF3FjWgAAAAAAAAAAAAAAAAAAAAAB>
Jan 23 13:57:37 dovecot: imap(tomas): Disconnected: Logged out in=91 out=887
Jan 23 13:58:37 dovecot: imap-login: Login: user=<tomas>, method=PLAIN, rip=::1, lip=::1, mpid=30496, secured, session=<2J3lGnFjWwAAAAAAAAAAAAAAAAAAAAAB>
Jan 23 13:58:37 dovecot: imap(tomas): Disconnected: Logged out in=91 out=887
Jan 23 13:59:37 dovecot: imap-login: Login: user=<tomas>, method=PLAIN, rip=::1, lip=::1, mpid=30510, secured, session=<+sV4HnFjXAAAAAAAAAAAAAAAAAAAAAAB>
Ako klienta pouzivam webmail, rounduce. Odosielanie primanie mailov, funguje. Ale vzdy, ked kliknem na nejaku polozku, napr. nova sprava, tak ma v logoch prihlasi odhlasi. Ale v clientovi som stale prihlaseny a funguje. Ako to fixnut? 
/etc/dovecot/dovecot.conf
mail_location = mbox:~/mail:INBOX=/var/mail/%u
mail_privileged_group = mail
namespace {
  inbox = yes
  location =
  mailbox Drafts {
    auto = subscribe
    special_use = \Drafts
  }
  mailbox Junk {
    auto = subscribe
    special_use = \Junk
  }
  mailbox Sent {
    auto = subscribe
    special_use = \Sent
  }
  mailbox Trash {
    auto = subscribe
    special_use = \Trash
  }
  prefix =
  separator = /
  type = private
}
passdb {
  args = %s
  driver = pam
}
protocols = imap
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0660
    user = postfix
  }
}
ssl_cert = </etc/letsencrypt/live/doremit.sk/fullchain.pem
ssl_key = </etc/letsencrypt/live/doremit.sk/privkey.pem
userdb {
  driver = passwd
}