I'm currently running Windows SMTP Server on a rented Windows 2003 Server VM. There are times when my hosting company network is down and my clients can't send their emails via the SMTP Server host I provide them with, e.g. smtp.mycompany.com.
I want to provide a failover solution so that if my primary Windows 2003 SMTP Server is down, all SMTP traffic will automatically be diverted to another VM hosted (smtp2.mycompany.com) located in another data center. Can this be done using Windows? I know there's HA proxy and Nginx but having to deal with Linux is beyond my capability - which is obvious otherwise I won't be asking such a novice question.:) However, I'm open to the possibility of renting a service that handles the failover. Thanks.