Tag Archives | zimbra smtp protection

How to Reduce Incoming SPAM and MTA Overload using Postscreen

Zimbra Postscreen, availabile starting with¬†Zimbra Collaboration 8.7, provides additional protection against mail server overload. One postscreen process handles multiple inbound SMTP connections and decides which clients may talk to a Post-fix SMTP server process. By keeping spambots away, postscreen leaves more SMTP server processes available for legitimate clients and delays the onset of server overload […]

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