This should be similar to setting up GMAIL as per:
http://capitaloffice.com.au/forum/viewtopic.php?t=900
Port is 995 and the mail server name could be smtp.office365.com or whatever mail server name you've been given.
Although according to this technical article from Microsoft:
https://support.office.com/en-us/articl ... US#option1
The port may be 587 or 25.
You may need to experiment depending on your set-up.