[Mailman-Users] Auto confirmation

Mark Sapiro mark at msapiro.net
Sun May 24 18:41:07 CEST 2009

Infokeep - Mario Sergio wrote:
>All people of my list receive my email but no confirmation was send to

Mailman attempts to remove headers such as Return-Receipt-To:,
Disposition-Notification-To: and X-Confirm-Reading-To: from the
outgoing messages it sends. There are several reasons for this:

Many people are annoyed by these requests and set their MUAs to ignore
them, so they are not reliable.

Someone might inadvertently request return receipts on a post to a very
large list and then have to deal with a large number of replies.

Return receipts could be used to fish for membership on a list with a
restricted roster.

This removal can only be changed by modifying the Cleanse.py handler
that does the removal.

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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