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SSRS subscrption SMTP is not working

Subbu Devalla 0 Reputation points
2025-05-17T17:08:36.4533333+00:00

Somehow our SSRS subscription is not sending emails and we are getting below errors

Message delivery to the host '52.96.183.226' failed while delivering to the remote domain 'mediamaxnetwork.com' for the following reason: The remote SMTP service rejected AUTH negotiation.

SQL Server Reporting Services
SQL Server Reporting Services
A SQL Server technology that supports the creation, management, and delivery of both traditional, paper-oriented reports and interactive, web-based reports.
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  1. Greg Low 1,985 Reputation points Microsoft Regional Director
    2025-05-25T03:36:15.0366667+00:00

    Chances are high that you've configured basic authentication in SSRS for talking to the mail server, and it's configured to reject basic authentication.

    Note the Important warning at the top of this page: https://learn.microsoft.com/en-us/sql/reporting-services/install-windows/e-mail-settings-reporting-services-native-mode-configuration-manager?view=sql-server-ver16 It says that Basic Auth with Client Submission is being disabled.

    Depending upon the mail server that you're using, it's also possible that it has an allow list for IP addresses. Check to make sure that's ok if it's used.

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