Your organization hosts email on-premises, and you need to relay non-delivery reports (NDRs) generated by your on-premises system through Exchange Online.Possible scenarios that are affected by this change include, but may not be limited to:
This change may affect your organization’s email routing or delivery. The sending host’s IP address or certificate domain on the SMTP connection matches your organization’s Inbound Connector of OnPremises type.Īfter November 1, 2023, if either of the above conditions are not met, the relay attempt from your on-premises environment to Exchange Online will be rejected.SMTP envelope sender domain in the MAIL FROM command (P1 sender domain).After we remove this condition, relaying email through Exchange Online will require the following: On November 1, 2023, we are removing the matching condition for the SMTP P2 sender domain (1c above). The sending host’s IP address or the certificate domain on the SMTP connection matches your tenant’s Inbound Connector of OnPremises type.SMTP header sender domain, as shown in email clients (P2 sender domain).SMTP envelope sender domain in the MAIL FROM command (P1 sender domain) or.SMTP certificate domain on the SMTP connection or.Any of the following is an accepted domain of your organization:.If your organization does not use Inbound Connectors of OnPremises type then this change will not affect you.Ĭurrently, to relay email through Exchange Online, two conditions must be true: Also, please note that UPN changes can take several hours to propagate through your environment.Today, we are announcing an update to our requirements for SMTP relay through Exchange Online. In fact, if you try running Powershell command "Start-SPOSiteRename" to rename your OneDrive URL, it generates one of the error like "This site template is not supported for rename" means that Personal Site Templates are not permitted to rename via Script manually at this point of time. This is done automatically in your tenant by Office 365 based on the User's UPN and as far as I know, Office 365 doesn't provide you with the option of manually overriding or renaming via UI or PowerShell. After you change User's UPN, automatically these User's OneDrive URL also changes. Hi OneDrive for Business URL in Office 365 is derived based on their UPN.
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