E-Mail problems after recent update

[ToddW]

After the recent WHM/cPanel update e-mails are not getting delivered to addresses hosted REMOTELY, sent from the SERVER.

IE: If the WHM/CPANEL server hosts Domain.com and php sends e-mail from that account to [email protected] which is hosted with Google Apps the e-mail never arrives. (The [email protected] is NOT an e-mail on the server, as there are no e-mail accounts other than the default one.)

This was not a problem until the recent update.

I've checked the DNS and it's setup for REMOTE MAIL, so it should be routed off-server.

What else is there to look into / change ?

 

[quietFinn]

Did you check /var/log/exim_mainlog ?

 

[ToddW]

Did you check /var/log/exim_mainlog ?

What specifically should I be concerned about in there regarding this problem?

I see that it does:
2013-04-21 05:57:41 1UTtqI-0008O1-QO SMTP connection outbound 1366549086 1UTtqI-0008O1-QO
And then:
2013-04-21 05:57:41 1UTtqI-0008O1-QO ASPMX.L.GOOGLE.com [2a00:1450:400c:c03::1b] Network is unreachable

(Keep in mind I haven't changed the MX records)

Yet other instances it says COMPLETED.
Yet the mail never arrives (inbox or spam).

I tested sending from this account to my own Google Apps e-mail, and received mail just fine.
I sent to another Google Apps e-mail and it worked fine.
(One of my test e-mails also has an account on this server as well.)

I should also note that DNS & MX is controlled by Godaddy, and has always been.

 

[ToddW]

Anyone else?