And there are some MTA's (the startrib.com one for instance) that refuse to accept mail from ISP client addresses. The solution is to send the mail to the ISP's mailserver and let it route it. I'm not defending the practice (either blocking or refusing ISP client connections), just listing a workaround. "Brian D. Ropers-Huilman" <brian at ropers-huilman.net> wrote: On 4/3/07, Jon Schewe wrote: > Has anyone else run across this? As of today I'm no longer able to send > mail through my mailserver (mtu.net) port 25 as comcast is blocking all > outgoing connections on port 25 for "my protection". This is a fairly common practice to prevent you from using mail servers that are not their own. One easy solution is to setup your MTA to listen on another port (I've used 2525) or to send via SSL/TLS as they never think to block 465. -- Brian D. Ropers-Huilman, Director Systems Administration and Technical Operations Supercomputing Institute 599 Walter Library +1 612-626-5948 (V) 117 Pleasant Street S.E. +1 612-624-8861 (F) University of Minnesota Twin Cities Campus Minneapolis, MN 55455-0255 http://www.msi.umn.edu/ _______________________________________________ TCLUG Mailing List - Minneapolis/St. Paul, Minnesota tclug-list at mn-linux.org http://mailman.mn-linux.org/mailman/listinfo/tclug-list --- Wayne Johnson, | There are two kinds of people: Those 3943 Penn Ave. N. | who say to God, "Thy will be done," Minneapolis, MN 55412-1908 | and those to whom God says, "All right, (612) 522-7003 | then, have it your way." --C.S. Lewis --------------------------------- Now that's room service! Choose from over 150,000 hotels in 45,000 destinations on Yahoo! Travel to find your fit. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20070404/60689737/attachment.htm