[Kolab-devel] SMTP Auth for Smarthost/Relayhost

[Dieter Kluenter]

Daniel Molkentin <molkentin at kde.org> writes:

> On Monday, 23. May 2005 17:15, Sebastian Haas wrote:
>> Cause it's possible the ISP checks the sender address if it the same as
>> for the authentification. And if i'm using several different email
>> addresses on the same ISP, i'm running in problems if i try sending
>> emails with different sender address, or not?
>
> Usually ISPs allow abitrary email addresses once the sender is authenticated. 
> Additional authentication doesn't make sense to me and has never occured to 
> me either, but there might be ISPs around that are paranoid enough. Could you 
> verify that you are really limited to sending from a certain address/domain 
> once you are authenticated w/ your ISP?

Yes, gmx does, they check your login name with from: xxx 
That is a smtp login of 'xxx at gmx.net' can not supply mail from
yyy at gmx.net.

-Dieter  

-- 
Dieter Klünter | Systemberatung
http://www.dkluenter.de
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