Uwe Brauer <oub@mat.ucm.es> writes:

>>>> "Uwe" == Uwe Brauer <oub@mat.ucm.es> writes:
>
>> Hi
>
>> For gmail the following setting works (which I also use in
>> thunderbird)
>> (setq smtpmail-auth-credentials '(("smtp.gmail.com" 587 "user" nil))) 
>
>
>> However when I set  
>
>>      (setq smtpmail-auth-credentials '(("mail.gmx.de" 587 "user" nil))) 
>
> I tried also 
>
> (setq smtpmail-auth-credentials '(("mail.gmx.de" 587 "user" nil)))
>
> Which works with 
>
> gnutls-cli --insecure -p 587 smtp.gmx.de

mail.gmx.de and smtp.gmx.de are not equal.

In current versions of Emacs smtpmail-auth-credentials no longer
exists anyway, itʼs all been replaced with auth-source.

Robert