Best SMTP Restrictions

[micasrafael]

Hi!

Can anyone please tell me what can be the best collection of SMTP restrictions to apply on a Zimbra server in a Company.

Thank you.

[phoenix]

Originally Posted by micasrafael

Can anyone please tell me what can be the best collection of SMTP restrictions to apply on a Zimbra server in a Company.

There is no simple answer to that, if you make the Protocol & DNS checks too restrictive you'll end up blocking legitimate email (from poorly configured SMTP servers). You need to look at the options available and make a decision yourself about which ones to use, you could start by looking at some of the options here: +postfix +DNS +protocol +checks - Yahoo! Search Results