Email is not picking up from mailbox

Hi Support,

I'm having an issue picking up mail from the Exchange mailbox.
I've emailed you the log files this morning.

When I stop the mail fetching and then press save I see the error:
"Could not find valid certification path to requested target, so kindly configure to apply Trusted/Self Signed Certificate" .

I've followed the steps in part 2 of this link and created a new cert file and moved it to the correct location but the issue persists.

I've confirmed IMAP is working and I've restarted the ManageEngine server, I've reset the password and confirmed the password is working in OWA.

Your prompt assistance would be appreciated as this is slowing work down.

Regards