Email's in the MyMQ portal at
https://my.mq.edu.au, and I think its something like firstname.lastname (at) students.mq.edu.au. MyMQ uses student number and some other password you should've changed on enrolment.
And there's heaps of different passwords .. they should've sent you a letter with your MQID or something like that - would be first letter of first name, first four letters of last name and number for login .. then password is two random letters and birthdate. <- That's for accessing WebCT where my iLectures are at.