Title: Why do posts appear to be from listname-bounces@mailman.u.washington.edu?

Question: I am subscribed to a Mailman list. When I use MS Outlook to read
messages sent to the list, all of the messages appear to be from
listname-bounces@mailman.u.washington.edu on behalf of the original person
who sent the message. Why is that and do other people see the same thing?

Answer:

When a message is sent to a Mailman list, Mailman adds a Sender header
that looks like this:

Sender: listname-bounces@mailman.u.washington.edu
[listname-bounces@mailman.u.washington.edu] On Behalf Of name of sender

Some email programs such as MS Outlook read this Sender header rather than
the original From header but label it as the From header. Only people
using MS Outlook (or other programs that behave in the same way) will see
the From line in this way. Most programs will display the correct From
line with the original sender's name and address.

Date: 08/2004  Author: R. Skiver Thompson