Securing Exchange emails to a single account
Posted on 2013-06-02
We have a client that requires securing emails by allowing replies only from the account the email was sent to originally.
In other words, if an email was sent to firstname.lastname@example.org, replies can be made from user1@mydomain only, and all attempts to communicate from other accounts in mydomain.com fail with ndr.
Currently, the client is on Exchange 2007, and will migrate to 2013 in the next few months.