SBS 2003 - Exchange not receiving new mail

[Dunestar]

Hello,

Please forgive me as I am fairly new at setting up Exchange on SBS 2003.

We recently switched from a static network to an all DHCP network (our old DSL modem died unexpectedly, we installed a new DSL modem/broadband router), and now cannot get any new mail on our Exchange Server. Sending/Receiving in Outlook on the workstations results in a "Send/Receive complete", however no new mail appears. Several test messages have been sent by clients and they always receive "message undeliverable" mail after they send to us. We are only running one SBS 2003 Server w/exchange and 4 workstations.

I am able to get internet access on all machines, and each machine can see the other, so the network is installed and working fine. I've tried removing/re-adding the exchange server on each Windows XP workstation. The computer name populates with "exchange.local" when entering the computer name and it finds the mailbox just fine.

Could someone tell me where I can go in the Exchange settings on the server to see what went wrong? Since we switched from static to DHCP, obviously the IP address of the server has changed, would that be the cause of the problem?

 

[mofusjtf]

You need to get another Static IP address. And then update your MX Record with your hosting provider to reflect the new static IP.

 

[noveyron]

Make sure your new router is forwarding port 25 to the server first and foremost.

 

[wahnula]

Another option is Dynamic DNS. This service is offered by

http://www.tzo.com,

http://www.dyndns.com

, and others, and is much more reasonable financially for a small office than a static IP service. You MUST have a known IP address for Exchange to receive mail. I use Tzo and have not had a problem in the ~4 years I've been using it.

Tony

Users helping Users...

 

[noveyron]

Hi Tony

I'm not sure if enything has changed externally here, my interpretation of the OP is that their modem died unexpectedly, which they then replaced with a router. The static/DHCP change was internal?

I could be wrong of course, I often am

 

[noveyron]

PS. Dunestar, you will need give your server a static IP

 

[ShackDaddy]

1) Your server has a static IP, not a dynamic IP. Make sure that's true, and note what the IP is.

2) Your router needs to be configured to forward tcp port 25 to your server's IP. Because you had to replace your router, the previous port mappings you had are gone. You should probably also add port 443 if you guys use OWA.

Dave Shackelford
ThirdTier.net