Jan 29 20:48:44 srvcepsar01 postfix/smtpd[16820]: connect from unknown[62.60.130.246]
Jan 29 20:48:44 srvcepsar01 postfix/smtpd[16820]: warning: unknown[62.60.130.246]: SASL LOGIN authentication failed: Invalid authentication mechanism
Jan 29 20:48:44 srvcepsar01 postfix/smtpd[16820]: disconnect from unknown[62.60.130.246] ehlo=1 auth=0/1 quit=1 commands=2/3
Jan 29 20:49:13 srvcepsar01 postfix/smtpd[19153]: connect from unknown[45.148.10.31]
Jan 29 20:49:15 srvcepsar01 postfix/smtpd[19153]: warning: unknown[45.148.10.31]: SASL PLAIN authentication failed:
Jan 29 20:49:15 srvcepsar01 postfix/smtpd[19153]: disconnect from unknown[45.148.10.31] ehlo=1 auth=0/1 quit=1 commands=2/3
Jan 29 20:49:47 srvcepsar01 postfix/smtpd[16820]: connect from mail-dy1-f174.google.com[74.125.82.174]
Jan 29 20:49:49 srvcepsar01 postfix/smtpd[16820]: 68472706E6B: client=mail-dy1-f174.google.com[74.125.82.174]
Jan 29 20:49:50 srvcepsar01 postfix/smtpd[16820]: disconnect from mail-dy1-f174.google.com[74.125.82.174] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7
Jan 29 20:49:52 srvcepsar01 postfix/smtpd[20446]: connect from localhost.localdomain[127.0.0.1]
Jan 29 20:49:52 srvcepsar01 postfix/smtpd[20446]: AF9CF706E7B: client=localhost.localdomain[127.0.0.1]
Jan 29 20:49:52 srvcepsar01 postfix/smtpd[20446]: disconnect from localhost.localdomain[127.0.0.1] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5