Problems with @Mail and Qmail

Hey guys ive been trying to get this working on my server for 3 days now, i hope yous can help me here, i have a plesk server which uses qmail and i installed @Mail the new php version i want
@Mail to be the mail server since i hate using horde, now i have @Mail all setup and i can send email to exernal services such as gmail hotmail etc no problem, i can receive them from gmail etc no problem too and i can also send email between @Mail accounts internally no problem however i have a help desk on my server and a few forms which people regularly use and the mail which is sent via the php scripts is not reaching the @Mail mailboxes, now if i disable qmail (Since @Mail is the email server) then the emails sent by php scripts ends up in the qmail "Not Preprocessed queue" and still doesn't reach the @Mail mailboxes and if i start qmail up it sends those emails but the ones ment for the internal email address in the @Mail system end up at the mailer-daemon, im pretty sure i must have to setup qmail to forward mail to the @Mail system or am i wrong?

So basically mail sent by php isn't going to the @Mail mailboxes.

Thanks in Advance

U1