Allow SMTP relay only for some clients

[raulcarvalho]

Hi!

I need to setup my Qmail in order to allow SMTP AUTH relay only to a specific list of clients or domains.

I want to be able to use SMTP for my default domain users, but not for the majority of our clients/domains.

Is this possible, via Plesk or by any other means?

Thank you!
Raul Carvalho