From my cpanel server friend of mine sends many emails via 'tell a friend about us' webform. However, his surfers oftern mess up the address and then I got it all to my root account saying:

email.addy@c...: domain missing or malformed

This address has been ignored. There were no other addresses in your
message, and so no attempt at delivery was possible.

and this keeps going and going. I cannot find the emails fro I cannot delete them so I do not receive this notification. This concerns many emails and only today I already received 1500 such notifications to nobory@server_name.com

Can anyone advice what to do with these and how to stop the messages?

We are already working on email address control mechanism for the webform but i need to get rid of the mails on server too.

Thank you