We have Exchange 2010 SP1, and setup a receive connector as below
Network - Local Ip all
Remote Server - 192.168.254.100
Authentication - None
Permissions Group - Anonymous
however, internal clients on our domain can recieve emails from the source applcaition server through our mail server and into thier mailbox, but emails are not being sent to external email accounts.
In message tracking we dont even see exchange ackowledge emails that were specified for external users, but it does show internal.
Any Help woould be appreciated. ( As one can guess, this is now affecting our client communications severely )