[Mailman-Users] Handling Munged From Addresses

Mark Sapiro mark at msapiro.net
Thu Feb 27 12:58:34 EST 2020

On 2/27/20 7:22 AM, Dennis Putnam wrote:
> I think this may have been addressed but I can't find it. Now that I am
> munging the from address to mitigate DMARC, recipients can no longer
> tell who the message is from. What are other folks doing to handle that?
> Other than having list members add their own signature? Thanks.

The From: header in the munged message contains the sender's display
name as in

From: Jane Doe via ListName <listname at example.com>

and depending on list settings the original From: is in either Reply-To:
or Cc:.

If this is not sufficient, perhaps the recipients can use smarter email
clients ;)

Also, if you are Munging the From: on all messages via the from_is_list
setting, it is better to use dmarc_moderation_action for this so only
those From: headers that need it are munged. The only reason to use
from_is_list is if those users whose domains publish DMARC reject or
quarantine policy feel they are singled out and treated as second class

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

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 195 bytes
Desc: OpenPGP digital signature
URL: <http://mail.python.org/pipermail/mailman-users/attachments/20200227/17d8e05d/attachment.sig>

More information about the Mailman-Users mailing list