How to block external email from domains or individual email
To configure ZIMBRA to reject external email addressed to users in the system, or blacklist email, follow these steps. 1. Configure smtpd_sender_restrictions as shown below.
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ZIMBRA 8.0.
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How to change the recipient of the "daily report"
By default, ZIMBRA emails the system daily report to [email protected]. To send the daily report to a different email address, use the following procedure.