Last week my Queen's University Belfast (QUB) IMAP settings stopped working. After tracking down that this was the reason I wasn't receiving new emails, I discovered the following IMAP and SMTP settings which now work. I have tested these settings with Outlook, Thunderbird and my Android phone. I assume they will also work with iOS and OSX clients too.

Note that there seems to be two different types of email accounts currently in use within QUB, but the following should work for 'Office 365' accounts, i.e. the new ones.

IMAP
Server name: outlook.office365.com
Port: 993
Encryption method: SSL

SMTP
Server name: smtp.office365.com
Port: 587
Encryption method: STARTTLS

User name: studentnumber@ads.qub.ac.uk.


Staff Accounts
Here are the settings that work for me to get staff email to work over IMAP/SMTP.
IMAP
Server name: owa.qub.ac.uk
Port: 993
Encryption method: SSL/TLS

SMTP
Server name: smtp.qub.ac.uk
Port: 587
Encryption method: STARTTLS

User name: staff number