newbie questions regarding queues, recipient lookup, RAM requirements
Working on implementing Symantec Messaging Gateway to provide some additional filtering to Exchange 2013 (small office).
I have 3 basic questions:
1 - I see the requirements state 4GB RAM. How strict is this requirement? Can it be run in a 2GB RAM for a small office? What are the downsides of giving SMG too little RAM? Slow message processing? Anything else?
2 - If our Exchange server goes down, does the SMG queue up email being received until Exchange is back up? If so, how much email can be queued? Just disk-space limited?
3 - When using recipient lookup via our AD server, what happens if our AD server goes down or connectivity to our AD server is somehow impeded? Are all emails rejected or do all emails pass through the recipient lookup filter?