Unable to Set Up Outlook Account for HP ePrint

My company just bought a HP Laserjet Enterprise 500 M551 last week. I was able to download ePrint in my boss' mobile devices - iPhone and iPad, enable picture ePrint and added her Gmail account to ePrint. But I couldn't figure out how to add her Outlook account to ePrint, as I don't know those three - POP or IMAP, hostname and port number. 

Someone please help.

Thanks in advance.