Prevention of local sender spoofing

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Antanas
Posts: 2
Joined: Wed Dec 27, 2017 9:27 am

Prevention of local sender spoofing

Post by Antanas »

Hello all,

how to protect Zimbra Community Server from local sender spoofing?
Current situation: emails from any foreign server are accepted and delivered with existing valid local address as a sender, e. g. MAIL FROM: realUser@mydomain.com
On ZCS NE 8.6.0 I was following several instructions and all other email spoofing prevention strategies are working now except named above.
Please point me to the right direction.
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