I think they are locking some servers and some host source ips. Ryan Coleman Publisher, d3photography.com editor at d3photography.com 612.618.5682 (mobile) On Jan 6, 2011, at 5:39 PM, John Hawley <jhawley at hissingdragon.net> wrote: > 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 >> > > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list