I have some e-mail on my Exchange Queue for 3/4 domains that just won't send. It just says "SMTP Protocol Error Occurred". I activated logging in MSExchangeTransport ...
Microsoft is rolling out inbound SMTP DANE with DNSSEC for Exchange Online in public preview, a new capability to boost email integrity and security. As the Exchange team explained on Wednesday, ...
Exchange Online users soon will be getting some security enhancements that will enforce the use of Transport Layer Security (TLS) encryption for e-mails and ward off so-called "man-in-the-middle" ...
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