We have recently started having an issue where our IMAP sensors will alarm with a "Login failed" error.
We have also recently migrated to Exchange 2013 which I expect is related but I'm hoping someone else has had a similar issue and has a fix.
IMAP logs on the exchange server show "Transport Layer Security (TLS) has already been negotiated."
We have approx 9 IMAP sensors and each one is having the same issue.
Any assistance with this would be greatly appreciated