Add ability to parse Received header
What does this MR do?
Screenshots
Backend-only change.
Does this MR meet the acceptance criteria?
Conformity
Availability and Testing
Email processing should only be slowed down when no token is found in any email headers.
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Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process
Security
No security impact.
Closes #199130 (closed)