An unknown error occurred while validating the server

For more information about how the Microsoft Exchange Transport service selects certificates for Transport Layer Security (TLS), see the following topics: This error is an informational status message.

This topic explains how to resolve certificate validation errors or refers to documentation that may help you resolve the errors.

We have specified replicated directories, which are mostly user profiles, and our database files. We have 13gbs and within 10 minutes of running DFS it was about 98% memory usage. We havent really been bothered by this, but if something crashes, we are pretty much screwed on the backups. We have recently reinstalled the operating system on the firewall, which is pfsense. We basically have the firewall open, so we have decided that it's is not a problem, at least it doesn't seem like it. Home Server = BGS-HQ-VRDSVR01 * Identified AD Forest. Doing initial required tests Testing server: BGS-HQ\BGS-HQ-VRDSVR01 Starting test: Connectivity ......................... Check that sufficient domain controllers are available. Event ID: 0x00000458 Time Generated: 08/05/2011 Event String: The Group Policy Client Side Extension Folder Redirection was unable to apply one or more settings because the changes must be processed before system startup or u ser logon.

BGS-HQ-VRDSVR01 passed test Connectivity Doing primary tests Testing server: BGS-HQ\BGS-HQ-VRDSVR01 Starting test: Advertising ......................... [Replications Check, BGS-HQ-VRDSVR01] A recent replication attempt failed: From BGS-CP-VRDSVR01 to BGS-HQ-VRDSVR01 Naming Context: DC=billsgs, DC=net The replication generated an error (1908): Could not find the domain controller for this domain. The system will wait for Group Policy processing to finish completely before the next startup or logon for this user, and this may result in slow startup and boot p erformance. Event ID: 0x00000456 Time Generated: 08/05/2011 Event String: The processing of Group Policy failed.

BGS-HQ-VRDSVR01 passed test DFSREvent Starting test: Sys Vol Check ......................... [Replications Check, BGS-HQ-VRDSVR01] A recent replication attempt failed: From BGS-CP-VRDSVR01 to BGS-HQ-VRDSVR01 Naming Context: CN=Configuration, DC=billsgs, DC=net The replication generated an error (1908): Could not find the domain controller for this domain. Event ID: 0x C000271A Time Generated: 08/05/2011 Event String: The server did not register with DCOM within the required timeout. Event ID: 0x8000001D Time Generated: 08/05/2011 Event String: The Key Distribution Center (KDC) cannot find a suitable certificate to use for smart card logons, or the KDC certificate could not be verified.

BGS-HQ-VRDSVR01 passed test Sys Vol Check Starting test: Kcc Event A warning event occurred. Smart card logon m ay not function correctly if this problem is not resolved.

A certificate is issued by a trusted company known as a Certification Authority (CA).

When Expression Web attempts to connect to a secure server, the certificate is automatically checked.

BGS-HQ-VRDSVR01 passed test Advertising Starting test: Frs Event There are warning or error events within the last 24 hours after the SYSVOL has been shared. Windows could not determine if the user and computer accounts are in the same forest.

Failing SYSVOL replication problems may cause Group Policy problems. BGS-HQ-VRDSVR01 passed test Frs Event Starting test: DFSREvent ......................... Check that sufficient domain controllers are available. Ensure the user domain name matches th e name of a trusted domain that resides in the same forest as the computer account. Event ID: 0x C0001B78 Time Generated: 08/05/2011 Event String: The Service Control Manager tried to take a corrective action (Restart the service) after the unexpected termination of the DFS Replication service, but this actio n failed with the following error: An error event occurred.

It will switch to TCP if the response packet is greater than 1280 bytes. If it doesn't work with a simple nslookup test, use the 'set vc' option in nslookup to force TCP and see if it works. Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCT Microsoft Certified Trainer [email protected] For urgent issues, you may want to contact Microsoft PSS directly. , posted the following: The Servfail is saying that it could not get the response from the server it was using, and NXDDOMAIN is saying the domain doesn't exist. Firewall is pf Sense (Free BSD-based packet filter).

It sounds like the query is not passing through or returning through a firewall. All outbound LAN traffic is allowed except port 25 from non-mail servers.

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