[imp] Messages I send getting tagged as spam

[Jody Cleveland]

Hello,

I've got the latest beta's running for Horde and Imp. I have this
running on a redhat server with MailScanner and Spamassassin.
MailScanner processes the mail, then sends it on to an Exchange 5.5
server.
When I send messages in the building, they go just fine. When I send
messages from home, they get tagged as spam. I investigated this a bit,
and found these bits:

I send a message to myself in horde in my office, and my spam score is
this:
spam	autolearn=not	 
-3.30	ALL_TRUSTED	 
0.26	AWL	 
-2.60	BAYES_00

I send a message to a coworker from home, and my spam score is this:
1.40	AWL	 
-2.60	BAYES_00	 
3.74	HELO_DYNAMIC_HCC	 
0.09	RCVD_IN_NJABL_DUL	 
1.99	RCVD_IN_SORBS_DUL	 
3.14	SPF_HELO_SOFTFAIL

I also have squirrelmail setup on this server, and messages from there
aren't being tagged as spam. I've been interested in replacing squirrel
with imp, so I'm anxious to figure this out. I noticed this in the
header of a message sent from imp:
X-Authentication-Warning: email.winnefox.org: apache set sender to
cleveland at winnefox.org using -f

Whereas, from squirrel, that same part says this:
 (SquirrelMail authenticated user cleveland);
by email.winnefox.org with HTTP;

Wasn't sure if that has anything to do with it or not.

Any ideas on why this may be happening, or how to correct it?

--
Jody Cleveland
Computer Support Specialist
cleveland at winnefox.org