I have two servers, server A running Exchange 2003 Standard Edition SP2 on Windows Server 2003, and server B running Exchange 2003 on Small Business Server. Each server is in a different location with a connection to the internet but no WAN connection between them.
I've been advised it's not good security practice to have mail delivered directly to Exchange running on SBS. Therefore server B has mailboxes but uses POP connector to get new emails from external POP3 email accounts, with MX record pointing to the external POP mail server. Server B sends emails as normal.
I want to get rid of these POP accounts. Is it possible to have mail delivered to my main email server on server A (which already recieves email for other domains). Then have server B retrieve new emails from server A in a similar way to the current POP connector?
Would this be a front end/back end or bridge head server? I'd appreciate any links showing how to set this up.