Error while saving the SMS panel configuration

Error while saving the SMS panel configuration

Hi Friends,

I have a problem with SMS Configuration.
While saving information, an error is observed that the server is not connected to the Internet!!
I configured the SMS panel 2 or 3 times Successfully. After that, I encountered this issue.
Here is Screenshot Of Error message in attachment

please provide a solution.

My SDP version: 11137
Database: SQLServer



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