telnet 25
220 OurDomain.com Microsoft ESMTP MAIL Service, Version: 6.0.3790.3959 ready at Fri, 24 Apr 2009 16:47:31 -0500
HELO MyPC.OurDomain.local
250 OurDomain.com Hello [10.x.x.64]
MAIL FROM: me@OurDomain.com
250 2.1.0 me@OurDomain.com....Sender OK
RCPT TO: bogus@OurDomain.com
250 2.1.5 bogus@OurDomain.com
After I made the change above on my Exchange server, an email from my Gmail account to bogus@OurDomain.com was rejected as it should have been.
telnet 25
220 OurDomain.com Microsoft ESMTP MAIL Service, Version: 6.0.3790.3959 ready at Fri, 24 Apr 2009 16:47:31 -0500
HELO MyPC.OurDomain.local
250 OurDomain.com Hello [10.x.x.64]
MAIL FROM: me@OurDomain.com
250 2.1.0 me@OurDomain.com....Sender OK
RCPT TO: bogus@OurDomain.com
250 2.1.5 bogus@OurDomain.com
After I made the change above on my Exchange server, an email from my Gmail account to bogus@OurDomain.com was rejected as it should have been.
To use Active Directory, you must have an Active Directory Server specified in Users -> Authentication -> Active Directory. The Base DN setting here is optional.