dovecot send mail and receive mail

[arrn]

Using thunderbird mail. Running an mailserver local for 2 domains and 2 domains i host elsewhere on a sentora panel.
DNS all setup, mail A records and MX records point to the exernal server and mail server. Try to send a email via thunderbird, have in my local mail log, user unknow in virtual table. First at all no clue why it looks local, becouse there is nowhere any dns entry what points to this local mail server.

On the sentora server in the dovecot log file i have the entries below.

Any clue or hint are welcome

dovecot.log file
2015-05-18 13:07:22auth: Error: read(anvil-auth-penalty) failed: EOF
2015-05-18 13:07:22auth: Error: net_connect_unix(anvil-auth-penalty) failed: Permission denied
2015-05-18 13:07:22auth: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
2015-05-18 13:07:22master: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
2015-05-18 16:33:23log: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
2015-05-18 16:33:23config: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
2015-05-18 16:33:23master: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
2015-05-18 16:43:41log: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
2015-05-18 16:43:41master: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
2015-05-18 19:42:03anvil: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
2015-05-18 19:42:03log: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
2015-05-18 19:42:03master: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)