GNU bug report logs - #78996
29.4; Invalid authinfo credentials when sending mail through SMTP

Previous Next

To reply to this bug, email your comments to 78996 AT debbugs.gnu.org.

Toggle the display of automated, internal messages from the tracker.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: 8dcc <8dcc.lists <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.4; Invalid authinfo credentials when sending mail through SMTP
Date: Fri, 11 Jul 2025 17:58:47 +0200

Hello,

I have been trying to write a simple Emacs Lisp function that lets me
select the credentials that are used when sending mail through
`compose-mail' with `message-send-mail-function' set to
`smtpmail-send-it'. I tried many things, including modifying the "From:"
field, and changing `user-mail-address' (both locally and
globally). Although the "From" header does indeed change to the right
value when sending the email, the credentials used when authenticating
with the SMTP server don't change; in the case of Gmail, this "From"
header gets overwritten and a new "X-Google-Original-From" header is
added.

I thought that the email that was used for authentication was the one I
had originally set as `user-mail-address', but it turns out that it
entirely depends on the order of the entries in my '~/authinfo.gpg'
file.

For example, if the contents of the file were:

    machine 127.0.0.1 login my-user port ssh password "****"
    machine smtp.gmail.com login foo <at> gmail.com password "****" port 465
    machine smtp.gmail.com login bar <at> gmail.com password "****" port 465

Then the credentials of "foo <at> gmail.com" would be used, since it's the
first line whose "machine" value matches the value of my
`smtpmail-smtp-server' variable.

Please let me know if you need any more information.

Thank you,
8dcc.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.