I'll bear this in mind. Thanks. $ telnet smtp.comcast.net 25 Trying 76.96.62.117... Connected to smtp.g.comcast.net. Escape character is '^]'. 220 omta23.westchester.pa.mail.comcast.net comcast ESMTP server ready ^] telnet> close Connection closed. $ telnet smtp.comcast.net 587 Trying 76.96.62.117... telnet: Unable to connect to remote host: Connection refused On 01/06/2011 05:18 PM, Smith, Craig A wrote: > John Hawley wrote: > > >> I just point postfix at smtp.comcast.net, and it just accepts. >> > From your earlier post, I assume that smtp.comcast.net is still > accepting your mail on port 25. > If so, that may eventually stop working at which point you'll need to > switch to port 587. > > In early 2009, there was discussion on this list about Comcast blocking > port 25. > http://archives.mn-linux.org/pipermail/tclug-list/2009-February/thread.h > tml > > I was unaffected at the time, but in February of 2010, Comcast stopped > accepting my port 25 connections. > > $ telnet smtp.comcast.net 25 > Trying 76.96.30.117... > telnet: Unable to connect to remote host: Connection timed out > > I called Comcast and they said "that's right, use port 587." > I can telnet to port 587, but actual use requires authentication with my > Comcast credentials. > > I've reconfigure postfix for port 587 per > http://www.kclug.org/pipermail/kclug/2008-February/032558.html > > and setup SMTP Authentication per > http://www.freelock.com/kb/postfix-relayhost > but I'm stuck on the last step: > > # urpmi --media main libsasl2-plug-login libsasl2-plug-plain > bash: urpmi: command not found > > > Tony Yarusso gave me > > >> apt-get install libsasl2-modules (That package will provide both >> > LOGIN and PLAIN.) > > The install worked, but didn't provide the > urpmi command on Debian with postfix 2.3.8. > > I've since moved to Ubuntu where apt-get says > libsasl2-modules is already the newest version. > > If anyone can help, I would be glad to document the solution. > I'm running postfix 2.7.0 and can live with out-going mail only. > > > > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list >