I've got a number of APC UPS units with Gen1 management cards, meaning they can only send email alerts via a "local" SMTP server and without any authentication. The only options the management cards support are the local SMTP server address, the From: address, and the To: address.
I have a private Postfix server running in my basement, and I have it set up so that it would permit relaying for mynetworks, and mynetworks contained the specific local IPs on my private network (192.168.1.x) of each UPS management card. This used to work fine for getting alerts from my UPS units to my Gmail address... until Comcast blocked all outbound connections on port 25. :( Here's what happens if mail is sent through this local Postfix server now: Jun 18 08:40:31 mugello sendmail[20546]: r5IFeVMG020544: to=< xxxx...@gmail.com>, delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=120370, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (Ok: queued as D4EF15301EE) Jun 18 08:40:32 mugello postfix/smtpd[20547]: disconnect from mugello[127.0.0.1] Jun 18 08:40:47 mugello postfix/smtp[20552]: connect to gmail-smtp-in.l.google.com[74.125.25.26]: Connection timed out (port 25) Jun 18 08:41:02 mugello postfix/smtp[20552]: connect to alt1.gmail-smtp-in.l.google.com[74.125.142.26]: Connection timed out (port 25) Jun 18 08:41:17 mugello postfix/smtp[20552]: connect to alt2.gmail-smtp-in.l.google.com[74.125.137.26]: Connection timed out (port 25) Jun 18 08:41:32 mugello postfix/smtp[20552]: connect to alt3.gmail-smtp-in.l.google.com[173.194.76.26]: Connection timed out (port 25) Jun 18 08:41:47 mugello postfix/smtp[20552]: connect to alt4.gmail-smtp-in.l.google.com[74.125.131.26]: Connection timed out (port 25) Jun 18 08:41:47 mugello postfix/smtp[20552]: D4EF15301EE: to=< xxxx...@gmail.com>, relay=none, delay=75, delays=0.13/0.03/75/0, dsn=4.4.1, status=deferred (connect to alt4.gmail-smtp-in.l.google.com[74.125.131.26]: Connection timed out) So I'm wondering if there's a way to configure my local Postfix server and a remote Postfix server under my control (and at our colo, so it's off the Comcast network) so that mail accepted by the local Postfix server will relay it on a port other than 25 to the remote Postfix, after which the remote server attempts delivery as normal to my notification address. Thanks in advance, SteveJ
