Oct 30 17:04:30 hezhijun postfix/smtpd[7357]: connect from unknown[92.118.38.38]
Oct 30 17:04:30 hezhijun postfix/smtpd[8433]: connect from unknown[46.38.144.146]
Oct 30 17:04:31 hezhijun postfix/smtpd[7361]: disconnect from unknown[46.38.144.57] ehlo=1 auth=0/1 rset=1 quit=1 commands=3/4
Oct 30 17:04:34 hezhijun postfix/smtpd[8433]: warning: unknown[46.38.144.146]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Oct 30 17:04:34 hezhijun postfix/smtpd[8433]: disconnect from unknown[46.38.144.146] ehlo=1 auth=0/1 rset=1 quit=1 commands=3/4
Oct 30 17:04:35 hezhijun postfix/smtpd[7350]: warning: unknown[46.38.144.32]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Oct 30 17:04:35 hezhijun postfix/smtpd[7350]: disconnect from unknown[46.38.144.32] ehlo=1 auth=0/1 rset=1 quit=1 commands=3/4
Oct 30 17:04:38 hezhijun postfix/smtpd[7361]: connect from unknown[46.38.144.17]
Oct 30 17:04:42 hezhijun postfix/smtpd[7361]: warning: unknown[46.38.144.17]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Oct 30 17:04:42 hezhijun postfix/smtpd[7357]: warning: unknown[92.118.38.38]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Oct 30 17:04:42 hezhijun postfix/smtpd[7361]: disconnect from unknown[46.38.144.17] ehlo=1 auth=0/1 rset=1 quit=1 commands=3/4
Oct 30 17:04:42 hezhijun postfix/smtpd[7357]: disconnect from unknown[92.118.38.38] ehlo=1 auth=0/1 rset=1 quit=1 commands=3/4
Oct 30 17:05:06 hezhijun postfix/smtpd[7350]: warning: hostname ip-38-38.ZervDNS does not resolve to address 92.118.38.38: Name or service not known
Oct 30 17:05:06 hezhijun postfix/smtpd[7350]: connect from unknown[92.118.38.38]