problem with SmartList and FormMail

Hello,

I'm having a problem using SmartList with FormMail.  I have a web form 
that prompts for an email address, then generates a message to the 
newsletter subscribe address, with subject "subscribe", from the 
address that the user entered.  The problem is that it doesn't work.  
No user visible error is generated, but in the message mailed to the 
list admin there are header lines

X-Diagnostic:	Already on the subscriber list
X-Diagnostic: 	752 [email protected]              32744 
[email protected]

In the SmartList log I see

 From [email protected] Tue Aug 31 19:29:47 2004
  Subject: subscribe
   Folder:  formail -R"From X-From_:" -iDate: -iReturn-Receipt-To: -iRe  
    1190


It looks like SmartList thinks that the message is sent from the 
admin's address, and discards it since that address is already on the 
list, even though the "from" header is set to the new address.  Sending 
a subscribe message from a mail client works, so the list software 
seems to be set up correctly.  The web form is configured correctly as 
far as I can tell, and does put the email into the "from" header.

I'm at a loss to understand why SmartList thinks these message are 
coming from the admin address.  Any ideas?  Thanks

--
Parker Abercrombie <parkera AT cs.ucsb.edu>