[Mailman-Developers] VERP and personalization modifications to the headers?

[Brad Knowles]

Folks,

	I'm on a mailing list server that has recently upgraded from 
Mailman 2.0.* to 2.1.5, and in the process of the upgrade, they also 
enabled full message personalization and VERP.  However, certain 
changes were also made to the way the "To:" and "Cc:" headers were 
being addressed, and I was wondering if someone could confirm to me 
where these changes were made.


	Previously, when receiving a message sent to the list, the "To:" 
header would be that of the list, and I would be an envelope 
recipient.  Of course, someone could also cc me directly, but that 
wasn't reflected in the "To:" header.

	Now, the "To:" header contains my address, and the list address 
is on the "Cc:" header.

	As I'm sure you can imagine, this has broken filtering for a 
number of people.


	My understanding is that this addressing change is a result of 
enabling full personalization and VERP, but I'm trying to understand 
just exactly why it has to be done this way.

	References to specific sections of specific RFCs would be appreciated.


	Thanks!

-- 
Brad Knowles, <brad at stop.mail-abuse.org>

"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."

     -- Benjamin Franklin (1706-1790), reply of the Pennsylvania
     Assembly to the Governor, November 11, 1755

   SAGE member since 1995.  See <http://www.sage.org/> for more info.