Squirrelmail error – cannot sending mails

If you are getting an error while sending mails using the webmail client ‘Squirrel mail’;

Server replied: 451 Temporary local problem – please try later.


This error is due to the missing entry of the recipient domain in ‘/etc/localdomains’.

$ vi   /etc/localdomains ( Add the domain name in this file)

Then restart the Exim service.

$ /etc/init.d/exim restart

This should fix the error.

NOTE : If you upgraded exim recently, then you should restore the localdomains in order to update the changes.


$  cd /etc/
$ ls -al localdomains.eximreset
$ cp localdomains.eximreset  localdomains


Now add the domain name and restart the mail service.


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