You receive the following error when attempting to send an email from webmail.
SMTP Error (451): Failed to add recipient "firstname.lastname@example.org" (Temporary local problem - please try later)
This issue occurs when the server is unable to perform DNS lookups.
- Access the server's command line as the 'root' user via SSH or "Terminal" in WHM.
- Open the
/etc/resolv.conffile in your preferred text editor.
- Add Google's public resolvers at the beginning of the file.
- Save the changes and exit the editor.
Please note that you should contact your network provider to determine what nameservers should be used in the