User should be blocked from using legacy authentication
Why This Matters
Legacy authentication protocols such as POP3, IMAP, SMTP, and older Exchange ActiveSync do not support modern security features like multifactor authentication or conditional access. Attackers exploit these protocols to bypass security controls and gain unauthorized access to user accounts. Blocking legacy authentication reduces your organization’s risk of credential theft and account compromise.
What Aether365 Checks
Aether365 verifies whether each user is effectively blocked from using legacy authentication protocols. This check appears in your Aether365 dashboard under the Microsoft 365 category.