Invalid Security Certificate for the server. Try changing the incoming port to 110, without SSL and check again.

Invalid Security Certificate for the server. Try changing the incoming port to 110, without SSL and check again.

Email wasn't working. What is the reason?

Invalid Security Certificate for the server. Try changing the incoming port to 110, without SSL and check again.

Причина:sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target