Re: authentication method fails

[Florian Weimer <fw@deneb.enyo.de>]

* Emanuel Berg:

> Florian Weimer wrote:
>
>>> I got an e-mail saying the traditional Gnus
>>> setup with `gnus-select-method' and
>>> `gnus-secondary-select-methods' does not work
>>> for certain mail servers.
>>> 
>>>    Sadly, it's not working. I tried this
>>>    a few times before and the error message
>>>    indicates, that my mail server does not
>>>    support the authentication method:
>>>    Couldn't send message via news: 441 You
>>>    need a valid email address to post:
>>>    Invalid response from SMTP server
>>>    mx01.emig.kundenserver.de:
>>>    554-kundenserver.de (mxeue112) Nemesis
>>>    ESMTP Service not available. (the mail
>>>    address i am using is an @online.de)
>>>
>>> I don't know nothing about online.de but
>>> I never heard of anyone having this issue
>>> before? Is it common, and is there
>>> a workaround?
>>
>> This looks like an SMTP error message to me.
>> Has the user configured SMTP authentication
>> at all?
>
> I don't know, and I don't know if I did that
> either, but it sure works for me, as you
> can see.

Wasn't the message injected over Gmane, via NNTP?

> I set the SMTP port (`smtpmail-smtp-service')
> to 587 witch is the one for starttls, if that's
> what you mean?

There are no Received: headers in your message which indicate how
authentication was performed, if it was even submitted over SMTP.

It's common to use network boundary authentication for SMTP, so on
some networks, no configuration is necessary to use the smarthosts for
that network.  The 1&1 mail servers are not in this category, at least
not for customers on external networks.