![(Updated) Reject multiple From addresses (P2 From headers) without a Sender header [MC886603]](https://mwpro.co.uk/wp-content/uploads/2024/08/pexels-skylar-kang-6046814-1024x683.webp "(Updated) Reject multiple From addresses (P2 From headers) without a Sender header [MC886603] 1")
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(Updated) Reject multiple From addresses (P2 From headers) without a Sender header [MC886603]
Message ID: MC886603 (Updated) Updated July 2, 2025: We have updated the timeline below. Thank you for your patience. We are proactively opting tenants out of the rollout that were detected as sending high volumes of emails exhibiting multiple From…
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