Problem con .qmail-postmaster

[compulinx]

Hello, for a time actualise my 8,1 Plesk from 8,0 to and now insolvent nonreceipt the mail. Within /var/qmail/alias/.qmail-postmaster I have the direction &[email protected] But watching log it tries to send the mail rejected [email protected]@mail.mydomain.com Where mail.mydomain.com is the name of my server.
Somebody has idea as I solve this?
Thanks