I am going to be running an Exchange 2003 server on at a remote location, hosted by a Server provider. The only thing this box will be doing is hosting the mail server and the Domain Controller (I know it's not suggested that the DC be on the same box as the Exchange Server but cost dictates that I do it this way)
The Provider has suggested that I get a firewall from them (Cisco 501). The cost is additional $150 a month from the provider and I'm wondering if this is something I really need.
Some of the questions I have:
Does this prevent me from getting Mailbombed?
Does this stop Spam?
What would be the main reason for having this device attached to a Mail server?
Thanks very much,