Lots of Failed Callouts

mrcbrown

Well-Known Member
Jun 5, 2003
100
1
168
Since the upgrade last night which updated Exim, I am getting failures galore:

451 Could not complete sender verify callout

And some of these are between servers - so really confused as to why the errors are coming in such a bulk, almost like Exim is not answering call-outs. Not a Exim master, but is this something easy fixable (short of turning off the callout) - ideas?

Any help is appreciated.
 

mrcbrown

Well-Known Member
Jun 5, 2003
100
1
168
I have actually been going over this in my head, it seems the servers are not responding to a callout to check for:

[email protected]

Which is what UPCP and Logwatch's send as - granted the mail is routed with forwarders within the cPanel setup, however the MTA doesn't seem to know anymore (since cPanel 11) that the domain literal of [email protected] really works.

I currently have Sender Verify Disabled - which of course is causing a flood of spam, but is also fixing this issue, and allowing some hosts who don't give verification though are valid hosts, a way in - so any way you know to whitelist or get the servers to respond that [email protected] exists?