Duplicate Messages

[eric]

I have just migrated to qmail from sendmail 8.8.8 (Solaris)

We have a web based email system that is using the following 
syntax:

/usr/lib/sendmail -f 'sendingdomain.com <[EMAIL PROTECTED]>' -bm


This works fine for sending - but seems to send duplicate messages --
all time stamps and unique IDs are exactly the same on the two
messages.

Help is appreciated. I removed my /var/qmail/* dirs and 
redid a make setup check but no go.

Thanks.