Hello all, I'm finally implementing into production the systems for which I got excellent advise from this list last fall (or was it last summer?). However, I have one issue I haven't been able to figure out: How do I restrict mail reception only to certain accounts from external sources? The system defines various aliases which are redirected to the root account. However, the system should not accept mail to any of those accounts (or, in fact, even to the root account) from an external source while routines/programs internal to the system should be able to send mail to those addresses. In case of the system in question it would be possible to fairly easily define the accounts that *should* receive mail from the outside of the system as the number of externally valid accounts is fewer than the that of the system aliases.
Thanks again for any insights! Ville
