Erro sent email "Reporting-MTA: dns "

[namld]

Hi all

I sent email following error message:

Reporting-MTA: dns; iron2.domain.com.vn

Final-Recipient: rfc822;ex@vnpt.vn
Action: failed
Status: 5.0.0 (permanent failure)
Remote-MTA: dns; [14.224.0.6]
Diagnostic-Code: smtp; 5.1.0 - Unknown address error 550-'5.5.0 Invalid EHLO/HELO domain.' (delivery attempts: 0)

help me..

[Libin Varghese · Accepted solution]

Hi,

This error is generated as a result of the destination side attempting to verify the hostname on the interface sending out the email.

I would recommend matching the hostname of the outgoing IP interface to you MX.

Network -> IP interfaces -> Hostname -> Should match the MX for the sending domain

This should correct the error.

Thanks

Libin Varghese

[dmccabej]

Hello,

You can also find some further info in a recent post : Email bounced by destination server. Reason:5.1.0 - Unknown address error ('550', [Sorry, your HELO/EHLO greeting must resolve (#5.7.1)']

Please let us know if you need any clarification on anything.

Thanks!

-Dennis M.

[namld]

Thanks you..