Callback setup failed while verifying

[burnitcouk]

Hi,

I have someone trying to email me who is getting the following bounce error:


The following addresses had delivery problems:

<myemail@domainhostedbycatalyst2.com>
Permanent Failure: 550-Callback_setup_failed_while_verifying_<senderemail @comcast.net>
Delivery last attempted at Wed, 25 Apr 2007 04:22:51 -0000


Is Catalyst2 implementing callback verification and rejecting emails where this fails? If this is the case then it would be nice if at least a more detailed error response was returned describing how the callback failed. Or is there something else going on?

Cheers,
Seb

[paulredpath]

Seb,

What mailserver is reporting the error?

[burnitcouk]

Here's some more info from the bounce...

Reporting-MTA: dns; comcast.net
Arrival-Date: 25 Apr 2007 4:22:50 +0000

Final-Recipient: rfc822; <myemail@domainhostedbycatalyst2.com>
Action: failed
Status: 5.0.0 550-Callback_setup_failed_while_verifying_<senderemail @comcast.net>
Diagnostic-Code: smtp; Permanent Failure: Other undefined Status
Last-Attempt-Date: Wed, 25 Apr 2007 04:22:51 -0000

[paulredpath]

Seb,

Does the bounce say which of our mailservers it was trying to connect to?

[burnitcouk]

Sorry, in trying to hide my email address from SPAMbots I have probably hidden vital information from you

The server was probably blueberry.catalyst2.com
Unless it was the backup MX which is usmx.linux.catalyst2.com

[paulredpath]

Seb,

Can you please open a ticket with all the details and we can do some checking.

[burnitcouk]

Ok, thanks