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SQL Database mail not working, The mail could not be sent to the recipients because of the mail server failure

Cadel33333 1 Reputation point
2021-04-13T12:41:05.677+00:00

Hi,

My SQL Server stops sending mail without any changes. Now it says

"Message
The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 1 (2021-04-13T14:38:46). Exception Message: Could not connect to mail server. (A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 104.47.6.36:587)."

We have about 10 SQL instances and all have same problem.

Outgoing mail server (SMTP) settings are

e-mail address: ******@organisation.com
Displayname: Support
reply-email: ******@organisation.com
Server name: organization-com.mail.protection.outlook.com
Port number: 25
This server requires a secure connection (SSL) --> check

SMTP Authentication --> Windows Authentication using Database Engine Service Credentials

I changed Port to 587 and Server name smtp.office365.com but same error. I also tried different SMTP authentication setting (with my own email address) but nothing

Could you help me, please?

SQL Server | Other

6 answers

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  1. Carlos Giraldo 0 Reputation points
    2022-02-03T23:15:46.557+00:00

    DavidZou-5383 your answered helped me a lot, it fixed this issue for us!!! all the best

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