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Comcast Gets Tough on Spam

Posted by michael on from the about-time dept.

WeakGeek writes "The Washington Post is reporting that Comcast, the nation's largest broadband ISP, has started blocking port 25 to reduce Spam. Jeanne Russo said Comcast is not blocking port 25 for all its users because it does not want to remove the option for legitimate customers who process their own e-mail. So the company is monitoring traffic and picking out machines that look suspicious. By blocking port 25, they say they cut Spam by 20% last week." ZDnet has another article, with a nice statistic: Comcast generates 800 million email messages/day, but only about 100 million of those are sent through Comcast's SMTP servers.

2 of 405 comments (clear)

  1. Just use SpamCop by Anonymous Coward · · Score: 5, Informative

    SpamCop will take care of figuring out the origin and reporting spam for you.

  2. Re:Why not pass through their mail servers? by Telent · · Score: 5, Informative
    Um... because most of us who run "home" mail servers do it because our ISP's mail servers are slow, unreliable, and down half of the time? Because the rewriting rules often keep us from using our personal domains? Because if we wanted to use our ISP's mail servers, we wouldn't be running our own?

    Now, in my case, none of this applies, because I have a clueful ISP (Hi, Speakeasy!), but back in the Dark Ages of DSL through $TELCO, believe me, I had to. Or I didn't get mail. And believe me, I live for my mail.