Apple has their own instructions for setting up Exchange email and calendar:
In English: https://support.apple.com/en-us/HT201729
In Finnish: https://support.apple.com/fi-fi/HT201729
Settings you will need:
Email: firstname.lastname@metropolia.fi (usually Firstname.Lastname@metropolia.fi, no special symbols)
Description: name of the mailbox in iPhone, like MP Firstname Lastname
Server: sync.metropolia.fi
Domain: pk.amk.root
Username: user account (your personal Metropolia user account)
Password: password (password for your personal Metropolia user account)