Whups uses wrong mail domain

I'm testing whups and I noticed that any notification emails sent for  
new comments use "From: [email protected]" instead of "From:  
[email protected]".  Horde is set to use an external SMTP server, so  
it's not coming from my mailer.  I've looked through all the configs  
and they're no signs of "localhost.domain.com", so I'm not sure how  
that is being identified as part of the address.  How can I override  
this behavior to use the domain instead?

Here is a sample email with full headers.

P.S.  For extra credit, can someone explain why the To header doesn't  
contain any real email addresses?

Thanks,
Jason

===| start email |============================================

     From:       [email protected]
     Subject:     [Tickets #2] Linux sucks!
     Date:     August 18, 2005 2:47:58 PM EDT
     To:       Ticket_Listeners: ;
     Return-Path:     <[email protected]>
     Received:     from murder ([unix socket]) by xserve.domain.com  
(Cyrus v2.2.12-OS X 10.3) with LMTPA; Thu, 18 Aug 2005 14:47:59 -0400
     Received:     by domain.com (Postfix, from userid 6000) id  
B1943572C70; Thu, 18 Aug 2005 14:47:58 -0400 (EDT)
     Received:     from horde.domain.com (unknown [10.0.0.201]) by  
domain.com (Postfix) with SMTP id 6AA12572C6D for <[email protected]>;  
Thu, 18 Aug 2005 14:47:58 -0400 (EDT)
     X-Sieve:     CMU Sieve 2.2
     Content-Type:     text/plain; charset=ISO-8859-1
     Message-Id:     <[email protected]>
     X-Filtered-With:     renattach 1.2.2
     X-Renattach-Info:     mode=badlist action=rename count=0

DO NOT REPLY TO THIS MESSAGE. THIS EMAIL ADDRESS IS NOT MONITORED.

Ticket URL: https://www.domain.com/horde/whups/ticket/?id=2
-----------------------------------------------------------------------
  Ticket             | 2
  Updated By         | someuser
  Summary            | Test Ticket
  Queue              | Help Desk
  State              | Assigned
  Priority           | 2. Medium
  Type               | Hardware - Server
  Owners             | Jason Dixon
-----------------------------------------------------------------------


someuser (2005-08-18 14:47) wrote:

one last comment.

===| end email |==============================================


--
Jason Dixon
DixonGroup Consulting
http://www.dixongroup.net



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