64.252.190.201 is an open relay that the spammer found recently. 90% it's not an anonymous one
Static ADSL Pool - MRDNCT Rback6 (NETBLK-SBC064252190000020418)
2701 W. 15th St. PMB 236
Plano, TX 75075
US
Netname: SBC064252190000020418
Netblock: 64.252.190.0 - 64.252.191.255
Coordinator:
Southwestern Bell Internet Services (ZS44-ARIN)
[email protected]
888-212-5411
Contact
[email protected] first of all and inform him that his mail server is abused. He might
be helpful and check who used his mail server today. (expect me while i was testing it two min ago hehe).
There's a possibility to have been abused from 100 spammers though which will make things harder.