Postfix Error? Can send mail but can’t receive mail

I am running OSX 10.3.3 Panther. I used Tenon iTools to set up my Web Server using Virtual domains. I installed Squirrelmail for one of these domains and can log in successfully. I can send out mail from Squirrelmail with no problem. I cannot recieve mail at all. Any send will get this following message back: This is the Postfix program at host mydomain.com. _________________________________________________________ I'm sorry to have to inform you that the message returned below could not be delivered to one or more destinations. For further assistance, please send mail to <postmaster> If you do so, please include this problem report. You can delete your own text from the message returned below. The Postfix program <user@mydomain.com>: Command died with status 1: "/cyrus/bin/deliver" Content-Description: Delivery error report Content-Type: message/delivery-status Reporting-MTA: dns; mydomain.com Arrival-Date: Tue, 18 May 2004 15:23:29 -0400 (EDT) Final-Recipient: rfc822; user@mydomain.com Action: failed Status: 5.0.0 Diagnostic-Code: X-Postfix; Command died with status 1: "/cyrus/bin/deliver" User & mydomain.com are substituted for the real user and domain.[color=darkred:0c1a135f5d][/color:0c1a135f5d][b:0c1a135f5d] _________________________________________________________ If anyone could at least steer me in the right direction i would be eternally grateful, as most of this is like Sanskrit to me...[/b:0c1a135f5d]