win 2008 server, ME 9.18, 2.60 MAPI connector,I can only send to internal emails,
same thing to smartphones with Activesync
verified the config with this http://www.mailenable.com/Tools/ActiveSync/Verification.asp and ok tool.
Open relay can send internal and external email, but if only authenticated relay to local email.
where am I wrong?
How can I fix?