Dear Readers, We have had a requirement to install 2 additional HUB's that are to be used ONLY for internal smtp traffic i.e internal applications and system messages. Current topology is 2 MBX and 2 CASHUB's in a single site domain. I'm assuming send connectors will be required however I'm unsure of the exact configuration. Any assistance would warmly welcomed. Many thanks, ScaryWasn't me boss

Hi, Send connectors are only necessary on these servers if they are to deliver mails directly to application servers. If they are just to receive mails from application servers - only receive connectors should be created. Leif

More related information to share with you: Allow Anonymous Relay on a Receive Connector http://technet.microsoft.com/en-us/library/bb232021.aspxXiu Zhang TechNet Community Support