Nov 12 12:47:46 mx dovecot: imap(sender@myowndomain.com): Disconnected: Logged out in=291 out=2751
Nov 12 12:48:46 mx dovecot: imap-login: Login: user=<sender@myowndomain.com>, method=PLAIN, rip=192.168.1.11, lip=192.168.1.12, mpid=19294, TLS, session=<6pT3wzxd4QrAqAoM>
Nov 12 12:48:46 mx dovecot: imap(sender@myowndomain.com): Disconnected: Logged out in=291 out=2751

Nov 12 12:27:12 mydomain postfix/pickup[29249]: 3210A1020814: uid=56 from=<sender@mydomain.com>
Nov 12 12:27:12 mydomain postfix/cleanup[29254]: 3210A1020814: message-id=<5c688f30a84ffe77a3dr1f2adacd06bb@mydomain.com>
Nov 12 12:27:12 mydomain postfix/qmgr[29250]: 3210A1020814: from=<sender@mydomain.com>, size=532, nrcpt=1 (queue active)
Nov 12 12:27:12 mydomain postfix/local[29256]: 3210A1020814: to=<sender@mydomain.com>, relay=local, delay=0.09, delays=0.06/0/0/0.03, dsn=5.1.1, status=bounced (unknown user: "sender")
Nov 12 12:27:12 mydomain postfix/cleanup[29254]: 3F1291020816: message-id=<20171112172712.3F1291020816@mydomain.com>
Nov 12 12:27:12 mydomain postfix/bounce[29257]: 3210A1020814: sender non-delivery notification: 3F1291020816
Nov 12 12:27:12 mydomain postfix/qmgr[29250]: 3F1291020816: from=<>, size=2288, nrcpt=1 (queue active)
Nov 12 12:27:12 mydomain postfix/qmgr[29250]: 3210A1020814: removed
Nov 12 12:27:12 mydomain postfix/local[29256]: 3F1291020816: to=<sender@mydomain.com>, relay=local, delay=0.05, delays=0.03/0/0/0.03, dsn=5.1.1, status=bounced (unknown user: "sender")
Nov 12 12:27:12 mydomain postfix/qmgr[29250]: 3F1291020816: removed