I have BM 3.6 with SMTP proxy and GW6.0 behind it. The email relay
fine except that the BM SMTP proxy had trouble with some domains. I
Craig's article dated Oct. 18, 2001 where there is a recipe for having
still handle the incoming, but to have GWIA send directly through BM,

avoiding the SMTP relay for outgoing...

Now the incoming still works fine, but the outgoing is broken. As GWIA

tries to send out, it says:

Detected error on SMTP command
Command: anydomain.com
Response: 450 Host down

The hosts are not down. I get DNS resolution on the GW server. If
has a definitive set of filters that can help me, I would appreciate