- For individual users
- Instant access to solutions
- Ask your tech questions
- Start your 30-day Free Trial
Main Topics
Browse All TopicsI have an Exchange 2007 Server that is acting strange on startup. The last couple of times I have started the server my Domain Controller (an SBS 2003 server) logs this error:
Event Type: Error
Event Source: Tcpip
Event Category: None
Event ID: 4199
Date: 3/16/2009
Time: 7:15:24 AM
User: N/A
Computer: BDPC
Description:
The system detected an address conflict for IP address 10.0.0.2 with the system having network hardware address 00:07:E9:31:9E:68. Network operations on this system may be disrupted as a result.
At the same time my server, my Exchange server reports:
Event Type: Information
Event Source: Tcpip
Event Category: None
Event ID: 4201
Date: 3/16/2009
Time: 7:16:48 AM
User: N/A
Computer: BDEX
Description:
The system detected that network adapter \DEVICE\TCPIP_{3DBEFB7B-1A
The MAC address is the network adapter of the second server. What I cannot get through my head is how my Exchange Server is taking my Domain Controllers IP address before Windows binds to the NIC.
Every morning i have a Fiasco getting the servers to behave and play nice with each other.
The only other thing is that this server also hosts 2 Virtual Servers using VMware Server v2.
This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.
Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.
If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.
Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.
Access the answers to your technology questions today.
30-day free trial. Register in 60 seconds.
Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.

Try it out and discover for yourself.
30-day free trial. Register in 60 seconds.
Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.
Business Accounts
Answer for Membership
by: scottdorseyPosted on 2009-03-18 at 03:57:16ID: 23917177
This has only happened to me once and the chances are one in a million but I actually managed to fit 2 network cards with exactly the same MAC address. Anyway, I'd be tempted to just swap both nics for new ones (even if they're only cheapo ones it'll be worth testing).
Scott