Authentication failed because the remote party has closed the transport stream

Vaishnav P 111 Reputation points
2021-10-12T13:59:29.467+00:00

Error log

Failure Sending mail.
Authentication failed because the remote party has closed the transport stream

Not possible to connect to the mail server smpt.office365.com on port 587"

The email Encryption method used is TLS 1.2
PORT:587
SERVER: smpt.office365.com
SSL: yes
Kindly advise, as the issue occurs after 1st Oct 2021

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Vaishnav P 111 Reputation points
    2021-10-13T05:07:12.217+00:00

    The Application supports only TLS 1.0 and that has to be upgraded to TLS 1.2 version which will resolve the issue.

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