Im going to provide a bit of background first of our situation and what we have done.
We originally started with a Small Business Server 2003 Premium Edition server.
We bought nearly duplicate hardware and built a new server from scratch using the new Small Business Server 2003 R2 software. The new machines specifications is as follows...
Microsoft Windows Server 2003 (5.2, Build 3790)
AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ (2CPU), ~2.2Ghz
Page File: 2085 users, 254583 available (This is our page file disk, spare hard drive).
System Manufacturer: Micro-star International CO., LTD
System Model: MS-7125
BIOS: Pheonix - AwardBIOS v6.00PG
Now, I went through and set up this machine as best I could to be almost an exact copy of our previous server, including using the same Domain name, everything was fine, so we took a backup of our files (No System State) and did a restore onto the new box, I took the exchange backup, restored the mailboxes, then restiched them back in for each user account. I was here to about 5 in the morning setting this up, and eventually had to go home.
At the moment, about half the machines have actually been rejoined to the domain, while the other half are living off the old DOMAIN SID, which I just recently found out isnt a good thing, but we are going around fixing that.
The server runs fine during the day, no expected problems at all, but our eventlog is filled with error messages, and just recently has been shutting down unexpectedly in the middle of the night, on saturday it shut down in the middle of the day. As of yet it hasnt shutdown while we have been working on it when its live. At one point it shutdown during an ntbackup which ended up breaking our mirror which I have since then repaired.
I checked the eventlog for the last message before it decided to shutdown and I found this error.
W32Time - Event 22
The time provider NtpServer encountered an error while digitally signing the NTP response for peer x.x.x.x:X. NtpServer cannot provide secure (signed) time to the client and will ignore the request. The error was: The specified user does not exist. (0x80070525)
But anyway here are the rest of the error messages.
NTDS KCC 1104 - 1925