Existing Exchange 2007 environment.
Configuring Exchange 2010 Edge server as part of Office 365 Hybrid configuration.
* certutil -verify appears successful from what I can tell
* required proxy configured via netsh winhttp proxy
* InternetWebProxy attribute for Edge server cannot be set as naturally Edge is not domain joined
- SMTP Send log error:
"Outbound TLS authentication failed for auth level DomainValidation with error RevocationOffline"
- Related event log on SMTP Receive Connector:
"Failed to confirm domain capabilities 'mail.protection.outlook.com:AcceptOorgProtocol' on connector 'Default internal receive connector XXXXXXXX' because validation of the Transport Layer Security (TLS) certificate failed with status 'RevocationOffline'.
Contact the administrator of 'mail.protection.outlook.com' to resolve the problem, or remove the domain from the TlsDomainCapabilities list of the Receive connector."
Our proxy has been configured to transparently provide access to our CA provider without authentication.
I've tried everything I can think of, does anyone know how to make this Edge server correctly access our proxy for CRL verification?