Tag Archives | zimbra spam

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 […]

Continue Reading

How to block incoming users or domains

Hello everyone, Zimbra Collaboration includes anti-SPAM and antivirus technologies such as Postscreen, Spamassasin, Amavis, ClamAV, etc. But sometimes, for legal reasons, etc., we need to block certain senders or even entire domains from sending unsolicited email. To do this, we will use the tools that come native to Zimbra Collaboration, and with a few simple […]

Continue Reading

Copyright © 2022 Zimbra, Inc. All rights reserved.

All information contained in this blog is intended for informational purposes only. Synacor, Inc. is not responsible or liable in any manner for the use or misuse of any technical content provided herein. No specific or implied warranty is provided in association with the information or application of the information provided herein, including, but not limited to, use, misuse or distribution of such information by any user. The user assumes any and all risk pertaining to the use or distribution in any form of any subject matter contained in this blog.

Legal Information | Privacy Policy | Do Not Sell My Personal Information | CCPA Disclosures