On Tue, 6 Nov 2001, Mer Gimenez wrote:

+          Hello all. How can I force (if I can) to listserv to "look" return
+ path filed in a mail instead of Sender filed?. In some MUA, I think that I
+ can´t change Sender field (for example in PINE). In Pine, I have:
+
+ From: [log in to unmask]
+ Sender: [log in to unmask]
+ Reply-To: [log in to unmask]

You can force Pine to use X-X-sender instead of Sender:
----
                       FEATURE: use-sender-not-X-Sender

Normally Pine adds a header line labeled X-X-Sender, if the sender is
different from the From: line. The standard specifies that this header
line should be labeled Sender, not X-X-Sender. Setting this feature
causes Sender to be used instead of X-X-Sender.
-----

This (X-X-sender) should be the default and prevents problems like you
mention. This is using Pine 'standalone' (i.e. with a SMTP-server
defined), all bets are off when using Pine interfacing directly with for
example /usr/lib/sendmail because then other policies might apply.

Xander