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is there a way to define an internal only distribution list?
for example: firstname.lastname@example.org but it does not receive emails from anyone else then *@domain.tld or even from email@example.com?
RestrictPostfixRecipients - ZimbraWiki
Be sure to vote on:
Bug 9620 - Mail policies and access control for sending to distribution lists & Bug 7104 - Distribution List Restrictions
-Mike Morse (MCode151)
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