SDP does not receive mail

SDP does not receive mail

Hello.

     When saving the settings for receiving mail, I get the message "ERROR: The email parameters have been successfully saved." The certification path to the requested object could not be found. Please configure to apply the trusted / self-signed certificate. ".
Protocol POPS port 995 interval is 1 minute. 
     Original message:
"ОШИБКА:Параметры эл. почты успешно сохранены. Не найден путь сертификации до запрошенного объекта. Пожалуйста, настройте для применения доверенного/самозаверяющего сертификата."

     What is the reason? Decision.

Sincerely.
Igor Stepanenko.

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