Hello,
thanks for your help. Now I have understanda what happens with
exim and authentication.
Ralph
On Wed, 11 Feb 2004, Christian Schmidt wrote:
> Hello Ralph,
>
> Ralph Ballier, 11.02.2004 (d.m.y):
>
> > yes, this is exactly what I have set up between Linux client in my school,
> > using a dial up connection (T-Online as access provider only) and my server/smarthost,
> > named "schule.de", using a fixed IP number. Now authentication (username and password)
> > is necessary for deliver mails from client to server.
> > But I wonder, why my server can
> > get mails from many other internet hosts whithout authentication. Note, I manager the
> > server "schule.de" too.
>
> Most frequently, SMTP authentication will be used to decide if the
> client may use the server as a relay. Relaying means from the server's
> point of view that it accepts an email although it is not directed to
> one of the domains the server is configured to accept emails for.
>
> For example:
> The server is configured to treat the domain name ralph.schule.de as
> local, so it will try to deliver mails for <username>@ralph.schule.de
> to the local user <username>.
> Relaying means accepting mails from authenticated users and to pass
> them on to another server - either the "destination server" (derived
> from a dns lookup for the destination domain's MX) or just a smarthost
> that will do the "rest of the delivery".
>
> If you want, just contact me in German...;-)
>
> Yours,
> Christian
> --
> [Zufaellig gewaehlte Signatur:]
> Wie man sein Kind nicht nennen sollte:
> Karl Auer
>
> --
>
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>
>
Verein zur Foerderung eines Offenen Deutschen Schul-Netzes e.V.
Ralph Ballier, Vorstand ODS-Verein e.V., 12357 Berlin
E-Mail: ballier@???, Tel.: 030 - 66 09 81 16, Fax: 030 - 66 09 81 25
http://www.schule.de
