In October 2022, Microsoft is going to deprecate Basic authentication in Exchange Online. This change will impact our customer's SMTP settings, because of these changes, emails sent from Atera might not appear to be sent from the correct email address, instead, they will appear as being sent from firstname.lastname@example.org.
You can make sure that Basic authentication is still enabled by running a PowerShell command in Exchange Online.
Connect-ExchangeOnline -UserPrincipalName email@example.com
Get-TransportConfig | Select SmtpClientAuthenticationDisabled
Set-TransportConfig -SmtpClientAuthenticationDisabled $False
At the moment, our teams are working on a long-term solution for Basic Authentication Deprecation for Exchange Online.
For more details about the deprecation for basic Authentication for Exchange Online, please see the following articles from Microsoft.
- Deprecation of Basic authentication in Exchange Online
- Can't connect to Outlook by using POP/IMAP and Modern Authentication
Thank you Mark Perrin for the Pro tip.