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The SMTP banner is the message which the remote mail servers receive when establishing an SMTP connection to a receive connector on Exchange Server 2007. By default the initial message has the following format :
220 ExchangeInternalName Microsoft ESMTP MAIL service ready at Date-Hour-Time
Disclosing the internal Active Directory name and the type of the mail server to the outside world is definitely not a good idea, from security point of view.
In the following Step-by-Step video tutorial, we will demonstrate how to configure the SMTP banner in Exchange Server 2007 SP1.
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Dean