Tag Archives | system administrators

Did you know? Zimbra Postscreen provides additional protection against mail server overload

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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Security Update – make sure to install pax/spax

All Zimbra administrators should make sure the pax package is installed on their Zimbra server. Pax is needed by Amavis to extract the contents of compressed attachments for virus scanning. If the pax package is not installed, Amavis will fall-back to using cpio, unfortunately the fall-back is implemented poorly (by Amavis) and will allow an […]

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Deprecation of the “X-XSS-Protection” header

Hello Zimbra Customers, Partners & Friends, In the past Zimbra recommended to set the X-XSS-Protection HTTP response header. This header used to enable additional protection against cross-site scripting (XSS) attacks in some web browsers. However this header is now deprecated and support is removed from most browsers. In case you have configured Zimbra to use […]

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Happy SysAdmin Day!

Is your website up and running? Are your emails flowing smoothly in and out of your mailbox? How about your cloud applications, are they available for your use? If so, give the IT team at your organization a high five for all the hard work they do to keep the website, email and applications running. […]

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