limiting Internet email access to / from specific sites

[scooter229]

I have been asked to allow Internet access to over 500 branches that currently are blocked from sending/receiving Internet email. I must allow them to send and receive to specific vendor sites only while not affecting our other sites and branches which are not restricted. I have one Internet connector.

Does anyone know of a software package that would accomplish this?

 

[Zelandakh]

How is this currently being done? Single server or multiple? If multiple, what connectors are you using?

 

[scooter229]

The branches are homed on (2) 5.5 servers in another site. The MAPI and POP protocols are disabled on both servers. There SMTP address has been removed. A group containing all the branches is blocked on the Interent Mail Connector.

I am experimenting using a mailbox on an unrestricted server giving the group "branches" permissions to the mailbox. The branches will connect via OWA eliminating the need for a configured client or logging off which is limited to certain times of the day due to business functions. I have sent and received Internet mail using this method. The resstricions may have to be enforced via policy.

Still a work in progress. Any thoughts are appreciated.