We are seeing the following on a server that is nether Exchange or a DC - is there some sort of IP mismatch going on here?
Log Name: System
Source: Microsoft-Windows-Security-Kerberos
Date: 07/12/2018 10:59:36
Event ID: 4
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: %computername%.domain.suffix
Description:
The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server DomainController$. The target name used was exchangeAB/EXchangeServer.domain.suffix. This indicates that the target server failed to decrypt the ticket provided by the client. This can occur when the target server principal name (SPN) is registered on an account other than the account the target service is using. Please ensure that the target SPN is registered on, and only registered on, the account used by the server. This error can also happen when the target service is using a different password for the target service account than what the Kerberos Key Distribution Center (KDC) has for the target service account. Please ensure that the service on the server and the KDC are both updated to use the current password. If the server name is not fully qualified, and the target domain (domain.suffix) is different from the client domain (domain.suffix), check if there are identically named server accounts in these two domains, or use the fully-qualified name to identify the server.
Event Xml:
4
0
2
0
0
0x80000000000000
132489
System
%computername%.domain.suffix
argdc1$
domain.suffix
exchangeAB/EXchangeServer.domain.suffix
domain.suffix
Many thanks for any advice...