support request for mail server configuration, in servicedesk plus, edition: standard, Version: 9.4, build: 9425

support request for mail server configuration, in servicedesk plus, edition: standard, Version: 9.4, build: 9425

the incident is that when configuring incoming mail, I get the following error:

Error saving email server details: Duplicate entry for key.

the application is installed on a linux server, Distribution: Ubuntu

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