I wanted to know what are the best solutions for receiving messages or mails, when our mail server goes down? Do I show another mail server which is outside our network (maybe somehow through gmail) or set up SMS system?
As for sms, I think I understand how it works - we need a modem (any or particular?), and then just setup drivers and ports. Am i right?
But I don't realy understand how to send emails, for example, through gmail? Would be nice if someone could explain this for me!

Thanks in advance,
Nikk