Logged In: YES 
user_id=10007

No, no errors anywhere.  I run the sendmail server on the
same machine -- all 18 messages are shown as being handed
off without incident to roundup-mailgw.  I recv
roundup-admin mail -- none was forthcoming.  Sendmail logs
show nothing odd.

I only ran it once.  (It is a tracker I'm really using.)  It
was something like the 1st, 2nd, and 4th messages that
didn't do anything.

Want me to test something else?