I have got a server with Plesk installed. About this I have got an internet site on the virtual domain which consists of the PHP function mail. Because of some "problems" with Plesk, virtual domain names and PHP mail: Plesk, SMTP and sending e-mail from same domain I have lost lots of important e-mail because of the truth that they wasn't sent.

Could it be in some way easy to recover individuals e-mail that wasn't sent due to the virtual domain problem?