Email server problem - 451 Temporary local problem - please try later

[TapanB]

Hi,

I have a cpanel server and it is not delivering some emails. When I tried to delivery it manually i got this:

LOG: MAIN
== [email protected] R=dkim_lookuphost T=dkim_remote_smtp defer (-44): SMTP error from remote mail server after RCPT TO:: host yyy.com [123.130.789.456]: 451 Temporary local problem - please try later
5605 SMTP<< 451 Temporary local problem - please try later
5605 SMTP<< 503-All RCPT commands were rejected with this error:
5605 503-Temporary local problem - please try later
5605 503 Valid RCPT command must precede DATA
5605 SMTP>> QUIT
LOG: MAIN

I have changed the domain / IP with dummy data. But why its giving 451 Temporary Local problem ?

Thanks.

 

[cPanelMichael]

Hello

The remote mail server is rejecting the message with the following error:

503 Valid RCPT command must precede DATA

Do you have SMTP authentication enabled in the email client used to send this email? Is the domain name you are sending from in the /etc/localdomains file on the cPanel server?

Thank you.