On Thu, Dec 15, 2022 at 09:07:40AM -0800, Eric Abrahamsen wrote:
> jindam.vani@disroot.org writes:
> 

[...missing user agent header]

> You're not doing anything wrong, Gnus doesn't display all headers by
> default; what is shown is determined by the value of
> `gnus-visible-headers'. The "t" key displays all headers, which is why
> you see it there. If you want to always see it, you can do something
> like:
> 
> (setq gnus-visible-headers
>       (concat "^User-Agent:\\|" gnus-visible-headers))
> 

If I understand correctly, jindam is missing the User-Agent: header in
his outgoing mail, i.e. Gnus is not putting it in the mail's headers.

Looking at their mails in fact, there is no User-Agent: in the headers.
Yours do have one.

Cheers
-- 
t