Before configuring SAML SSO, Atlassian recommends to create an Atlassian Site&Org admin account with an email address outside the managed domain.
Our current admin accounts are within the managed domain, so we need to change their email addresses.
In a Test Jira environment with verified domain "company.com" an existing admin user was renamed in the Org directory from "admin@company.com" to "admin@company.onmicrosoft.com".
Both email addresses are aliases of the same M365 user account. Emails sent from any mailbox to both these email addresses are correctly received. But after changing the email address in the Atlassian Org Directory:
- The email from Atlassian "Email address change request" is correctly delivered to the old email address "admin@company.com".
- But the email from Atlassian "Please verify your email address" is not delivered to the new email address "admin@company.onmicrosoft.com". Not in the Inbox, not in the Spam/Junk folder, nowhere.
What can be the cause that this email from Atlassian is not delivered?