The problem is that the SMTP message is not send by the user, it is sent by the
exchange server so we can't use authentication. :(
thanks,
Daniel
Volker Tanger wrote:
> Greetings!
>
> A second possibility would be to request some kind of user authentication on the
> firewall for SMTP/POP3. Client or session authentication with a high/long timeout
> might do the job.
>
> If you have personal(ized) workstations and fixed IP addresses, you could simply
> allow traffic from this group of IP addresses.
>
> Daniel Bocage wrote:
>
> > The problem is that the list is of about 200 users!!
>
> If you have the user database already in an LDAP, RADUIS, ... server, then you can
> use that data. Else you will have to maintain that long user list anyway.
>
> Bye
> Volker
>
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