Postscreen for Zimbra

Hybrid Working
In this guide, you will explore:
Postscreen for Zimbra MTA Boosts Email Security
Zimbra postscreen is an additional Anti-Spam strategy at the MTA level.The postscreen daemon provides protection against mail server overload. One postscreen process handles multiple inbound SMTP connections and decideswhich clients may talk to a Postfx SMTP server process.

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