In Zimbra you can optionally enable Postscreen as an additional Anti-SPAM strategy. Postscreen will offer 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 […]
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Zimbra installation integrity check
The script in this article allows Zimbra administrators to create checksums of all the files in a Zimbra installation. The output of the script can be used to identify unintended changes and newly created files. Such changes can for example be caused by hackers. You can use this script pro-actively by scheduling it in a […]
Proxy the Admin Console via Zimbra Proxy increase TLS security
The Admin Console web-ui is the go-to place for managing your Zimbra installation. Historically the Zimbra Admin Console was accessed directly without Zimbra Proxy. However there is no longer a need to access the Admin Console without using Zimbra Proxy. And to make sure the Admin Console uses the best TLS security you need to […]
Recent Admin Backup Tidbits – Part 1
Continuing our earlier advice to take backups frequently, and secure them offsite – thought we’d highlight a few recent administrator related things added to ZCS that you might not have noticed. Network Edition Backup Enhancements Speaking of backups, there are some new ways to take them in ZCS 5.0.x. With ever larger quota usage, […]