Whenever I create a new email domain in SM it defaults to mail.[domainname.com] and I'd like to have it default to one standard hostname. I am not providing custom hostnames for my clients, as it creates too much SSL work, and makes migration difficult.

Also, is it possible to set the hostname for all my customer domains in one shot? I've manually updated about ten of them so far, but have 163 total. I'm not going in and updating every domain if I don't have to.

In fact, what's that field for? Autodiscovery?

Thanks