I'm trying to get Mailman to work with Courier.

I have a hosteddomain bar.com and want to create aliases for a non existant users that execute a pipe upon receiving mail ie foo-tech-subscribe @ bar.com should get piped to /usr/bin/mailmain I put in an the following alias foo-tech-subscribe @ bar.com : | /usr/bin/mailmain

makealiases -chk returns no errors and makealiases -dump returns foo-tech-subscribe @ bar .com: ".xalias/foo+2dtech+2subscribe @ bar+2ecom"@ foo.com where foo.com is the defaultdomain

When I send mail to the account I get a smtp error message saying the user doesn't exist, a 550 User not found error is in the courier mail log

So my question is, how do you get .courier files ( ones generated by makealiases or custom ones ) to execute for hosteddomain aliases that don't point to a local user account but to a program instead.

Thanks Kevin

additional notes the bar.com domain is in the hosteddomains file and the esmtpacceptfor.dir the bar.com domain is NOT int the locals file the defaultdomain file contains only foo.com where foo != bar