On Thu, Jan 29, 2026 at 04:55:22PM +0100, Vincent Lefevre wrote:
I did a test with a message in a maildir mailbox that just contained
the headers
Return-Path: <>
To: [email protected]
(since it is in a maildir mailbox, there is no "From " line).
Note that the Return-Path is valid (used by mailer-daemons).
When I copied the message to a (new) mbox file, I obtained the
following "From " line:
From @ Thu Jan 29 16:16:11 2026
Yeah, that's not good.
In that case, or whenever Mutt has nothing to put there, it could
generate a dummy address -- maybe [email protected], or invalid@invalid.