SOLVED Cannot send/receive emails on new server

Since moving to a new server I can't send emails to Forwarders or send/receive from/to Email Accounts.

After a while I realised the firewall on my server didn't have the necessary ports open so I opened them. But I'm still getting "Connection timed out" errors.

When I try to telnet to a gmail server on port 110 or 26 I also get a "Connection timed out" error even though those ports are open in my firewall. My host blocks port 25 by default so I am trying to use port 26 and have changed the setting in WHM's Tweak Settings accordingly.

In another "emails not working" thread I found the cat /etc/resolv.conf command. When I run that, my nameservers show up incorrectly: they are missing a digit at the end. I'm not sure if that is a problem or just the way cat /etc/resolv.conf shows itself.

Looking in exim_mainlog I find the emails look like this:

Code:

+++ 1cEzE2-0002HH-Pu has not completed +++
2016-12-08 13:59:06 1cEzE2-0002HH-Pu <= testaccount@domain.com H=xxxxxxxxxx.com ([IPv6:::ffff:192.168.1.68]) [109.147.90.193]:63274 P=esmtpsa X=TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256 CV=no A=dovecot_plain:testaccount@domain.com S=2390 T="Test 1359" for email@gmail.com
2016-12-08 13:59:06 1cEzE2-0002HH-Pu SMTP connection outbound 1481205546 1cEzE2-0002HH-Pu domain.com email@gmail.com
2016-12-08 14:01:14 1cEzE2-0002HH-Pu H=alt1.gmail-smtp-in.l.google.com [173.194.221.27] Connection timed out
2016-12-08 14:29:58 1cEzE2-0002HH-Pu SMTP connection outbound 1481207398 1cEzE2-0002HH-Pu domain.com email@gmail.com
2016-12-08 14:49:03 1cEzE2-0002HH-Pu H=gmail-smtp-in.l.google.com [74.125.133.27] Connection timed out
2016-12-08 14:51:11 1cEzE2-0002HH-Pu H=alt1.gmail-smtp-in.l.google.com [74.125.205.27] Connection timed out
2016-12-08 14:53:18 1cEzE2-0002HH-Pu H=alt2.gmail-smtp-in.l.google.com [74.125.68.27] Connection timed out
2016-12-08 14:55:25 1cEzE2-0002HH-Pu H=alt3.gmail-smtp-in.l.google.com [108.177.97.27] Connection timed out
2016-12-08 14:57:32 1cEzE2-0002HH-Pu H=alt4.gmail-smtp-in.l.google.com [74.125.28.27] Connection timed out
2016-12-08 14:57:32 1cEzE2-0002HH-Pu == email@gmail.com R=lookuphost T=remote_smtp defer (110): Connection timed out

Does this look like it might be a problem with my server's ports not actually being open or could there be a setting somewhere else blocking them?

Thanks

 

Ah, thanks. I will have to ask my host to open port 25 then.

But would this also stop the sending of mail as well as receiving? I find it strange that trying to telnet to port 110 still shows up as blocked when I've opened the port in the server's firewall.

 

I asked the host to lift the block they had on port 25 and it's working now.

Thanks