Sender Domain check with smtpfront-qmail

Hi,

I'm running mailfront-0.98 with cvm-vmlookup to reject messages for
invalid vmailmgr users. This needs to call smtpfront-qmail instead
qmail-smtpd in the startup script. I have now some trouble with SPAM
with non-existant domains in the envelope-header for users which uses
forwards. So my server get the mail and will forward it, but the remote
server rejects with sender-domain invalid and I'll get the bounce. For
qmail-smtpd is a patch available (mfcheck) which checks the sender
domain at smtp-level against DNS and reject if it's non-existant. Is it
possible to get this feature work with smtpfront-qmail?


Greetings,

Thomas Rabe