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cPanel server : 451 Temporary local problem – please try later

If you see the above error in a cPanel server while sending mail form any of the account, you can solve the same using some settings in the server end.

First thing you need to do is, make sure that the domain exists in the file,


If not, then add the domain to the above file.

Now you need to change the value of  $useSendmail to the below value,


For that edit the file  /usr/local/cpanel/base/3rdparty/squirrelmail/config/config.php and change the value of  $useSendmail

Also make sure,


Main >> DNS Functions >> Edit MX Entry

The Email Routing selector should be “Local Mail Exchanger  » OR ” “Automatically Detect Configuration: Local (recommended) more »”

This should sure solve the issue you faced regarding  Temporary local problem.

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