I’ve just wasted a good half hour trying to migrate my email to an Office365 SMTP server. It seems that QMUL have decided to discontinue their in-house email server, but have not provided sufficient details about the new settings needed for email clients.
So here they are, in case anyone else runs into difficulties.
SMTP server : smtp.office365.com
Username : <your-id>@qmul.ac.uk
Port : 587 (not the default)
Encryption : STARTTLS (not SSL/TLS)
I imagine that similar settings should work for other institutions which have moved to an Office365 system.