Bounces from Spam Mail

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Problem

Block backscatter emails

Solution:

Running the following zimbra commands help to control backscatter emails :

su - zimbra
zmprov mcf zimbraMtaEnableSmtpdPolicyd TRUE
zmprov mcf zimbraMtaSmtpdRejectUnlistedRecipient yes
zmprov mcf zimbraMtaSmtpdRejectUnlistedSender yes
zmprov mcf +zimbraMtaRestriction "check_policy_service unix:private/policy"
zmmtactl restart
zmconfigdctl restart

"Prabhat Kumar"

<kumarp@zimbra.com>

ZCS Version - Collaboration 8.6.0_GA_1194 Patch 6