How to blacklist a domain account in Zimbra mail server?

5 pts.
Tags:
Mail server
Phishing
Security
Zimbra
How to blacklist a domain account in Zimbra mail server? I am often getting a Phising mails to all my users clients saying that Please provide the username and pwd for resetting otherwise your mailbox will be fullfilled. Please help me out of this issue...

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Here’s a very good article covering Zimbra Security including blacklists/whitelists.

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