how to block incoming traffic and set auto reply for specific ID ?
Our customer has one requirement. For one of the mail ID they want to enable only outgoing mail traffic. But if someone try to send mail then it should get deliver and the sender should get auto reply like "it is system generated mail" .
I gone through below link :
RestrictPostfixRecipients - Zimbra :: Wiki
through this we can block incming traffic...but how can i set auto reply to fulfill this requirement...