Incoming mail for the @utoronto.ca and @mail.utoronto.ca domains is scanned by Exchange Online Protection (EOP).
There have been sporadic reports of EOP generating spam false positives (legitimate messages marked as spam and delivered to the Junk Email folder instead of the Inbox folder). The service will improve its accuracy over time as it learns about our communication patterns, but you can take the following steps to help:
Use the message reporting function in Outlook or Outlook Web Access (OWA) to correct the categorization of a message.
Reports like the above will contribute to the ruleset used, but if you want to guarantee that future messages from the same sender are received in your Inbox, you can:
You can add up to 1,024 addresses or domains to your safe senders list.
Note: Another way to add trusted senders is to add their address to your contacts and make all contacts trusted senders. Under Filters, check Trust email from my contacts. Anyone you add to your contacts list will automatically be a trusted sender.
As always, you are encouraged to check your Junk Email folder regularly for legitimate email messages.
Secure U of T advanced threat protections: Overview
Secure U of T advanced threat protections: Anti-phishing protection
Block an email sender in Outlook
Create a rule to filter unwanted spam from your inbox on Outlook Web Access (OWA)