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error's up the yingyang

By amit2 ·
Hi everyone I'm new to this tech board and hope someone can help me out here... I'm looking at a client's network which has 6 Win2K advanced servers running. One in good condition and the rest outdated junk. Layout is like this, 1 DB server,1 Exchange 5.5 server running Exchange SMTP, 1 Proxy server which also has DNS, DHCP & WINS and is also the DC, 1 SMTP server, 1 Firewall server, 1 Backup Web hosting server with main server hosted by VERIO. These two servers replicates every three hours across same T1 as internet.
The proxy server is also running as the DNS, DHCP,WINS & as DC with three nics. Two of the nics 1 external, & 1 internal are set at 100 the other internal nic is at 10. IP address of Proxy is set as preferred DNS on the server and the two internal nics set with loop-back address as DNS with round-robin enabled. The SMTP server is also set at 10Mbps. The are all on auto-sensing 10/100 3Com switches, should I force the two nics at 100? This is only my 2nd day there and I have seen the network crash 4 times already.

Here is another warning message rceived every five minutes on the proxy server. Anyone's help will be GREATLY APPRECIATED..

Security policies were propagated with warning. 0x534 : No mapping between account names and security IDs was done.

For best results in resolving this event, log on with a non-administrative account and search http://support.microsoft.com for "troubleshooting 1202 events".
A user account in one or more Group policy objects (GPOs) could not be resolved to a SID. This error is possibly caused by a mistyped nor deleted user account referenced in either the User Rights or Restricted Groups branch of a GPO. To resolve this event, contact an administrator in the domain to perform the following actions:

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by Joseph Moore In reply to error's up the yingyang

Personally, I like it when switch ports and the network cards plugged into them are all hard-coded to the same speed types. Autosensing is OK for user workstations, but not for servers. So, I would hard-code the speeds on everything.

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by Joseph Moore In reply to

As for the error message, read this TEchnet article:

http://support.microsoft.com/?kbid=247482

hope this helps

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