Tom Horsley <tom.horsley@xxxxxxx> writes: > I just got mail from comcast telling me they have blocked > port 25 on my cablemodem due to possible abuse (I don't > really care if they do this - I'm not using port 25). Local port 25 or remote port 25? I'm maintaining a friend's Fedora system remotely and have noticed that AT&T blocks remote port 25 on their DSL installs. I had to open up an alternate incoming mail port here (smtps) and configure the remote end to use smtps just to get the nightly cron messages from the remote box. > Just curious: Anyone know if postfix will try to talk port > 25 for any reason if I've got it configured to send > via the relay? Or is this just comcast trying to sound > like they have a good reason to do what they always > wanted to do and block smtp :-)? Or are there maybe > obscure kerneloops or smolt or bugbuddy things trying > to talk port 25 directly sometimes? I guess it depends on how you configured your postfix. ;-) There are ways to do fallback smarthost setups, but that is more work. The obvious setup with something like the following should only send to the requested host at the requested port number. main.cf: relayhost = [relayhost.example.com]:465 I assume you did comment out the smtp line in master.cf or otherwise prevented outsiders from connecting to your server. -wolfgang -- Wolfgang S. Rupprecht http://www.full-steam.org/ (ipv6-only) You may need to config 6to4 to see the above pages. -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
