Can't send or receive email with Postfix (times out)
I'm using Postfix and Dovecot on Debian Wheezy for sending and receiving
emails. Dovecot seems to work just fine; I can connect, retrieve, move
around, delete, etc., emails that already existed in the account (from
past cron jobs). Postfix doesn't seem to work correctly though. This is
what happens:
Send email from ian@mydomain.com using Thunderbird (also tried K9 on
Android).
The email seems to make it to the SMTP server okay. The message gets put
in my Sent folder in IMAP.
Nothing happens after this. The recipient never receives the email.
My error log:
Aug 19 18:12:26 debian postfix/smtp[17822]: 3F920CFC2B4: to=<[MY GMAIL
USERNAME]@gmail.com>, relay=none, delay=1282, delays=1219/0.01/63/0,
dsn=4.4.1, status=deferred (connect to
alt2.gmail-smail-smtp-in.l.google.com[74.125.130.26]:25: Connection timed
out)
Aug 19 18:14:56 debian postfix/qmgr[17804]: 3F920CFC2B4:
from=<ian@[MYDOMAIN].com>, size=2701, nrcpt=1 (queue active)
Aug 19 18:14:56 debian postfix/smtp[17836]: connect to
gmail-smtp-in.l.google.com[2607:f8b0:400e:c01::1a]:25: Network is
unreachable
Aug 19 18:15:17 debian postfix/smtp[17836]: connect to
gmail-smtp-in.l.google.com[173.194.79.26]:25: Connection timed out
Aug 19 18:15:38 debian postfix/smtp[17836]: connect to
alt1.gmail-smtp-in.l.google.com[74.125.142.26]:25: Connection timed out
Aug 19 18:15:38 debian postfix/smtp[17836]: connect to
alt1.gmail-smtp-in.l.google.com[2607:f8b0:400e:c01::1b]:25: Network is
unreachable
Aug 19 18:15:38 debian postfix/smtp[17836]: connect to
alt2.gmail-smtp-in.l.google.com[2607:f8b0:400e:c01::1b]:25: Network is
unreachable
*edited out my domain and Gmail username.
I have a Comcast residential line (static IP), and my firewall isn't a
problem, the ports are open.
I also cannot send email to my Postfix server. I've tried sending emails
from my Gmail accounts to my domain, and I've also tried sending emails to
myself from within my domain; neither works. There are no errors in the
logs and no indication that emails were ever received.
I am using STARTTLS on both Postfix and Dovecot (certs are self-signed). I
used this guide for the most part.