Hello. I'm running Exchange 2003 SP2. Lately, I have noticed an Event ID 680 CONSTANTLY. It's pretty much the only Failure Audit in my Security Event Log. It looks like this:
Logon attempt by: MICROSOFT_AUTHENTICATION_PACKAGE_V1_0
Logon account: userName
Source Workstation: laptop01.ourDomainName.net
Error Code: 0xC0000064
There are two parts to this issue, but both are similar...
First, the person userName refers to is using a MAC. However, the Mac they are using is not named laptop01. The actual machine laptop01 hasn't been powered on in over 3 months. So, why is this user constantly hammering the Exchange server with a bad machine name?
The second part to this is that the only other Mac user in the organization is also a cause of constant error 680's, but his machine name appears fine.
Obviously I have something screwed up in the setup for Macs and Exchange, but I don't know what. As a result, I think our Exchange server is taking a speed hit as it seems to be running slow lately. Any ideas? Thank you for your help in advance!