Exchange 2010 server in on INTERNAL LAN (exchange.et.local) - 10.1.15.25
External Mail domain: mail.et.org
If i have a laptop that is OFFSITE and setup up outlook /Exchange profile and put in MAIL.ET.ORG for the mail address: it works successfully for sending and receiving.
If I have a laptop that is on the LAN and setup up outlook /Exchange profile and put in MAIL.ET.ORG for the mail address: it works completes successfully, BUT A FEW MOMENTS LATER, the mail.et.org CHANGES to EXCHANGE.ET.LOCAL and now the laptop will not work when remote.
Obviously it works internally with exchange.et.local, but it will not work when offsite.
Anyone know of a way to resolve this issue? Thank you