You may wish to add a sender's domain to your personal safe sender's list in Outlook Live to ensure mail from that domain is never classified as Junk E-Mail.
To add a sender's domain, click Options in the upper right hand corner of OWA, and choose Junk E-Mail from the list on the left hand side that appears.
Under the heading Safe Senders List, enter the domain (i.e. @aston.ac.uk) and click Add:
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