[Mailman-Users] Re: Non-members allowed to post!

Brad Knowles brad at stop.mail-abuse.org
Wed Mar 9 19:33:55 CET 2005

At 12:06 PM -0600 2005-03-09, David Gibbs wrote:

>  Ok, so then there is no way for Mailman to know the envelope sender,
>  right?  Mailman can only look at the mail that is piped into it from the
>  MTA (sendmail in my case), so if the information isn't available on the
>  headers, Mailman can't be aware of it.

	It depends on how your MTA provides that information to the Local 
Delivery Agent.  That information may or may not be made available in 
a header that is created by the local MTA, in which case Mailman 
could look at that.  But without support from your local MTA, there 
is no other way that Mailman could know that information.

>  Are we really talking about the 'sender' mail header?

	Some MTAs may encode that information in the "Sender:" header, yes.

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.

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