Networking Issues



I was wondering if anyone could please help with some networking
troubles on SBS 2003 R2.

The server (Dell Poweredge 1800) has been running fine for 2 years,
but after installing some updates (including WSUS 3) and rebooting,
the server got confused about one of the network cards installed and
was reporting limited or no connectivity. It showed in device manager
that the internet facing card (we have two NICs, one for LAN and one
for Internet) was an "ADM" branded card, when infact it was (and had
previously been recognised as) a Linksys.

I tried to run CEICW, but it failed at the network stage. I needed to
get this fixed quickly, so I salvaged a Netgear NIC from another
machine and replaced the Linksys card with it.

I tried to run CEICW again, but it errored at the same part.
Thankfully i managed to set everything up manually and it appeared to
be working OK. Looking at the ICWlog it appears to fail at this stage:

Error 0x80070389 returned from call to Clearing all static routes().
Error 0x80070389 returned from call to CNetCommit::Common().
Error 0x80070389 returned from call to CNetCommit::Commit().


Following another post, I have deleted the ghost entries for the
Linksys, and the ADM card from device manager,disabled routing and
remote access, and tried CEICW again, but still no joy.

Further to this, a couple of days ago I noticed that several emails
were being routed to our backup mail server (just some POP3 accounts
with our ISP). It appears as if we are losing connection
intermittently. I'm not sure if this is related to the problems above,
a faulty network card, or issues with our ISP. How is best to go about
diagnosing this?


I can see in event viewer this entry:

Event Type: Error
Event Source: Service Control Manager
Event Category: None
Event ID: 7000
Date: 08/08/2009
Time: 14:00:21
User: N/A
Computer: ITSERVER
Description:
The PCASp50 NDIS Protocol Driver service failed to start due to the
following error:
The system cannot find the file specified.

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.


And this one (not sure if it is related, but confused as to why it it
thinks it needs to do a promo/demo):

Event Type: Warning
Event Source: MSDTC
Event Category: SVC
Event ID: 53258
Date: 08/08/2009
Time: 13:59:43
User: N/A
Computer: ITSERVER
Description:
MS DTC could not correctly process a DC Promotion/Demotion event. MS
DTC will continue to function and will use the existing security
settings. Error Specifics: d:\nt\com\complus\dtc\dtc\adme\uiname.cpp:
9351, Pid: 1324
No Callstack,
CmdLine: C:\WINDOWS\system32\msdtc.exe

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 05 00 07 80 ...?


Any help would be greatly appreciated.


Thanks,

Chris
.



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