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jon_dom2
2013 Oct 05
2
SMTP Auth Spam Mail Attack
Hi All
I have a server which seems to be getting spam relayed through it.
The story is this.....
User reported loads of undeliverables being received so I had a trawl
through the logs.
So the attacker connects to our server using SMTP AUTH........
Oct 5 15:17:53 www sendmail[6972]: AUTH=server,
relay=pppoe9.net109-120-27.se1.omkc.ru [109.120.27.9] (may be forged),
authid=jon, mech=LOGIN,