Sendmail authentication and selective "RELAY"

[Artyom Viklenko]

Hi!

Does anybody can point me to some hints/how-to about
the folowing problem?

I have sendmail with SASL authentication.
All users have to authenticate themselves.
But I'd like to have option to allow user1 to send mail
to other users of the same domain and to any other user
in any other domain. But user2, for examle, can send
mail to any users ONLY in the same domain, i.e. not to relay.

Is it possible? How can I achive such approach?

Thanks!

-- 
        Sincerely yours,
                          Artyom V. Viklenko.
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System Administrator            artem at mipk.kharkiv.edu
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IIAT NTU "KhPI" 21, Frunze Str., Kharkov Ukraine 61002
Phone: +38 (057) 7157048        Fax: +38 (057) 7062749
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