I have asked this before but I'll ask it again.
Could it be possible to have mail Receiver Blacklist. We are having problems that there are lots of mail hitting spam filters for former employees. Those emails could be deleted on sight.
We are also getting lots of email to non-existing accounts. Even better solution in our case would be Receiver Whitelist that could be checked before forwarding to our internal SMTP server. Of course with wildcards.
Recipient verification could be the best solution but it is not compatible with all email servers. It would be usable if there were list of servers (with wildcards) that can be checked by it. That way i could put recipient verification on for our own servers because it works with them ok and leave rest of the servers unchecked.
These would diminish administration of our astaro server by few hours per week. Yes there is lots of spam hitting the filters and most of them could be blackholed this way. Every single one must be quaranteened before deletion because there could be something usefull in there. There is maybe one in thousand mails in quaranteen that contains something that must be forwarded.
(Sorry for bad english - I hope you get my point)
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