Feb  1 03:10:39 mailgw postfix/smtpd[31168]: disconnect from host.domain.net[8.3.14.x]

Feb  1 03:10:41 mailgw postfix/smtpd[31175]: connect from localhost.localdomain[127.0.0.1]

Feb  1 03:10:41 mailgw postfix/smtpd[31175]: 42B1A1620467: client=localhost.localdomain[127.0.0.1]