DKIM signature rejected

[googly.negotiator862 at aceecat.org]

On Thu, Feb 20, 2025 at 10:50:52AM +0100, Matthias Apitz wrote:

> I've got a reject of an email to a public PostgreSQL mailing list
> due to an issue with my DKIM signature. Attached below. I've sent a
> test email to my company mailbox to see my resulting DKIM
> signature. It's:

> What could be wrong with this and how do I fix this. mutt is sending
> the mail to the SMTP server of my provider 1blu, i.e.  I have in
> ~/.muttrc:

Just read the reply carefully:

> This email has a DKIM signature on the List- headers of the email,
> indicating that it is not allowed to pass this email on through a
> mailinglist.

The DKIM signature header you quote shows that you're signing over the
List-* headers. You -- or your SMTP server -- should not do that.

If you can't change that, you could try a public remailer of some sort.

Btw, I had exactly this problem with the postgresql-general mailing
list too. But I run my own mail server, so the fix was easy.

-- 
Ian