451 Temporary local problem - please try later

[Deker]

Hello

I recently moved an account to my new server. This account can not send/receive emails on the new server.
When I try to send an email to someone, I face the following errors:

squirrelmail
Message not sent. Server replied:

Requested action aborted: error in processing
451 Temporary local problem - please try later

atmail:
Could not send message to SMTP server. Check you have access to send messages via the server and that all To/CC/BCC addresses are valid\nError: SMTP Server rejected email. Returned:451 Temporary local problem - please try later

I checked if the user is existing in /etc/localdomains and found that it's already exist there.
also I changed $useSendmail = false; to true in the squirrel mail config:
/usr/local/cpanel/base/3rdparty/squirrelmail/config/config.php
It only fixed sending mails via SquirrelMail not receiving.
also other webmails still can not send/receive emails.

I'm using latest version of cpanel.
Other services are upgraded to the latest stable version too.

Please guide me to fix the issue.

[crazyaboutlinux]

Hello,

is this domain use

[crazyaboutlinux]

Hello,

In WHM at Main >> DNS Functions >> Edit MX Entry, the Email
Routing selector should be "Local Mail Exchanger more » OR " "Automatically Detect Configuration: Local (recommended) more »" . i was having this issue & i have updated to local mail exchanger & issue got resolved.

[cPanelMichael]

Hello

I suggest opening a ticket with our staff if the other solutions advised here do not help. You can open a ticket via:

Submit A Ticket

Post the ticket number here so we can track the issue.

Thank you.

[jestep]

I'm assuming this has been resolved, but if not check the permissions and ownership of /home/accountname/etc

I recently ran into this problem after accidentally changing the group on the etc directory. It need to be owned by the user and the group should be mail.

# chown -R myuser:mail etc/