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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,