Subject: bug#28971: 24.4; Gnus TLS/SSL POP issue

From: Noam Postavsky <[email-masked]>
Date: Thu, 09 Nov 2017 21:29:26 -0500

Emanuel Berg <[email-masked]> writes:

>> (defun gnutls-available-p () nil)
>
> This doesn't seem to have solved the problem
>
>     Opening TLS connection to `pop.zoho.com'...
>     Opening TLS connection with `gnutls-cli --insecure -p 995 pop.zoho.com'...done
>     Opening TLS connection to `pop.zoho.com'...done
>     Mail source (pop :user ABC :password XYZ :server pop.zoho.com :port 995 :stream ssl) failed: (error USER ABC not valid)

You may also need to customize `tls-program' to use the `openssl'
command.  Although I think external-program based tls is kind of flaky,
so I don't how much you can really expect from it.