Can't sign if I sign

[googly.negotiator862 at aceecat.org]

On Sat, Apr 13, 2024 at 11:30:55AM +0200, Laura Orvokki Kursula via Mutt-users wrote:

> > > I have encountered a strange problem setting up mutt: when I
> > > attach a signature block to my e-mail using `$signature', my PGP
> > > signature is, according to mutt, invalid. E-mails without
> > > signature blocks yield valid PGP signatures. If I go back and
> > > replace the automatic signature with something else, the PGP
> > > signature checks out too. Is this a known issue? Is there
> > > something I can do about it?

> After some more testing, I figured out this issue had nothing at all
> to do with signature blocks, or mutt. The culprit was the silly
> `X-Clacks-Overhead' header I had configured postfix to add ages
> ago. How I came to think it had a correlation with whether or not I
> use a `$signature' remains a mystery; my bet is on a lack of sleep.

But that is even odder. GPG signatures don't cover headers. Is it
possible that your postfix bit was in fact added to the body instead?

-- 
Ian