The SPF PTR record mechanism is crucial in email authentication, allowing the receiver to verify the sender's domain.

Microsoft's goal is to improve the security of its products by retiring outdated email exchange servers that are no longer supported.

As per Microsoft’s update that rolled out on March 21, 2023,  reports on authentication and deliverability with DMARC can be received by all domain owners having their MX pointed to Office 365. This major update will allow domain owners…