If I want to setup 2 mail servers in 2 locations, for redundancy in case one dies, what is the proper way to do it?
It's not important whether I am using Linux or Exchange at this time. My confusion is, if my users are pointing to pop.company.net, there will be a DNS record pointing to one server. But if that server goes down, how will Outlook know to switch to a different address? Also, how does the mail replicate between the 2 servers? I know about having multiple MX records, but that doesn't fix the Outlook issue.
If you can simplify the answer to a basic outline of how it all works out, I can look up the more technical stuff.