printing problems HELP

I have a windows 2003 server we have just installed.

The 5 workstations are all Windows XP Pro.

I have joined all the computers to the domain and each user logs into the
domain.

The problem I currently have is this:

Three of the machines are sharing their printers and some files.

Every thing was going just fine until this last week ( directories being
shared and printers also) now we cannot connect to any machine on the
network or their printers.

I have tried to make the machines all trusted but when I try to add users
from the domain to the computer I get "trust conections from this computer
to the domain server failed."

From the server I cannot get a connection to any of the machines either
using administrator for the domain..

What am I doing wrong?? Plelase help me get this up and running

There were some issues with SMB signing [security option for digitally sing
communications] but I believe this has been fixed with SP2 for XP Pro. The
first thing to check is that your dns is configured correctly for the domain
in that your domain controller points only to itself and the domain
computers point only to the domain controller as their preferred dns server
as shown with the Ipconfig /all command. I would also look in Event Viewer
on the domain controller for any pertinent Event ID's and run the support
tool netdiag on the domain controller and at least one problem domain
computer looking for any problems. The support tools are on the install disk
for the appropriate operating system in the support/tools folder. See the
link below to make sure your dns is configured correctly for the domain.
Also since you are offering shares on the XP Pro computers, make sure that
the built in Windows Firewall is disabled on them or correctly configured
with the needed exceptions for access to shares and shared printers. ---
Steve

http://support.microsoft.com/default...en-us%3B291382

"Mike Ryan" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
>I have a windows 2003 server we have just installed.
>
> The 5 workstations are all Windows XP Pro.
>
> I have joined all the computers to the domain and each user logs into the
> domain.
>
> The problem I currently have is this:
>
> Three of the machines are sharing their printers and some files.
>
> Every thing was going just fine until this last week ( directories being
> shared and printers also) now we cannot connect to any machine on the
> network or their printers.
>
> I have tried to make the machines all trusted but when I try to add users
> from the domain to the computer I get "trust conections from this
> computer to the domain server failed."
>
> From the server I cannot get a connection to any of the machines either
> using administrator for the domain..
>
> What am I doing wrong?? Plelase help me get this up and running
>