🚀 go-pugleaf

>My boss wants me to find out if msmail/schedule can be connected to a lynux 
>mail server, if so how?

Well, yes, you can. What you need is a MSMail<->SMTP gateway. I did it a
few years ago using the MS offering, which was (a) stupidly expensive, and 
(b) a horrible piece of software, which required its own PC on which to
run. I believe there are third party offerings around these days which
just have to be better. Hopefully somebody else has some more recent
experience.

Is it possible to ditch MSMail and use a regular POP3 client instead? If so,
I suggest you go that route. Though it sounds you are using the schedule
stuff, which would make ditching MSMail kind of difficult.