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New Spam Zombies Use ISPs' Mailservers

Posted by samzenpus on from the trust-this-mail dept.

RMX writes "CNet's reporting that the new spam zombie PCs are no longer acting as their own mailservers, but cooperate with the ISPs' recommendation that instead of running your own mail server, to use theirs instead."

1 of 383 comments (clear)

  1. RFC 2476 by tepples · · Score: 5, Informative

    I have a lot of customers that go on the road ... They just leave the SMTP set to us, and we have secure logins. Voila. Oh, but we can't use port 25 because a lot of ISPs block it.

    You're using SMTP AUTH over TLS on port 587/tcp per RFC 2476, right? ISPs have fewer legitimate reasons (if any) to block 587/tcp out than 25/tcp out.