Microsoft 365 Exchange Error Code 4.4.316 – Connection refused [Message=Socket error code 10061]

In this post, let’s have a look at the error message “4.4.316 – Connection refused [Message=Socket error code 10061]” that you get when working with Microsoft 365 Exchange Online.

These are the errors that you usually receive when there is a problem in delivering the email message that was sent by you. These errors are generated and sent by Office 365. This is usually alled as DSN which stands for delivery status notification or in simple words bounce messages.

NDR or Non-delivery report is one of the common type of message that you receive which indicates to the user that the email was not delivered.

Error Message

4.4.316 – Connection refused [Message=Socket error code 10061]

Error Details

Microsoft 365 or Office 365 is trying to send a message to an email server outside of Microsoft 365 or Office 365, but attempts to connect to it are failing due to a network connection issue at the external server’s location.

This error almost always indicates an issue with the receiving server or network outside of Microsoft 365 or Office 365. The error should also include the IP address of the server or service that’s generating the error, which you can use to identify the party responsible for fixing this.

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