Also make sure you have run the Internet address wizard and completed all the details correctly. It's worth checking it even if you have run it in the past.
Main Topics
Browse All TopicsHi,
We are having some trouble with our RWW and OWA not being available from the Internet. It all works fine internally using either the server name or the FQDN of our server.
Ports are forwarded on the router and I have tested these using an open port checker and the firewall logs show that the request is hitting the router and is being forwarded to the internal IP of the SBS server.
I am able to access the default web page (IIS7) splash page from external if I come in on mail.mydomain.com.au, but if I try and access:
http://remote.mydomain.com
https://remote.mydomain.co
https://remote.marsdens.co
All return 404 page from IE after a long time, firefox returns Connection Interrupted, The document contains no data. The network link was interrupted while negotiating a connection. Please try again.
http://mail.marsdens.com.a
both mail.mydomain.com.au and remote.mydomain.com.au resolve to the same IP
Any help would be greatly appreciated.
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.
The remote management on the router is disabled and if I watch the logs I can see it forwarding the request from the external IP to port 443 on the internal IP. If I go to that IP it just pauses on a blank screen for about 15secs then goes to the default 'diagnose connection problem' page
The internet address wizard has been run, several times now, I believe I have completed the details correctly, don't think there is a whole lot to get wrong.
You might have done this :
Have you tried restarting your router ?
What router are you using ?
have you got any other router just to test?
I am suggesting the above only because if everything is working fine locally it should work externally as long as the ports are opened ;
try the above website to see if the ports are visible (again you may already have done that but just a suggestion).
sometimes MTU size also matters, but before going into that I would recommend to restart the router, check the ports on router to be opened and test or replace the router and see if that helps.
check with netstat -na | more
to see if the ports are opened locally (you can redirect the output to a txt file and attach here).
Well, i thought so that you would have checked all the above ;
can you telnet to your draytek 2900 and after loging in :
wan ppp_mss ?
it will display your current mtu size and let us know here what it is or you can try reducing it by
wan ppp_mss 1400 (you can replace 1400 with the value of your choice going downwards).
let me know if this helps or if you can try replacing your router.
I am only suggesting these as everything is workin fine locally and all ports are opened/listening on your sbs ;
Port 4125 is no longer needed for RWW in SBS 2008; that was only in SBS 2003. Port 987 is not strictly required for RWW either, although it is required for accessing SharePoint (companyweb) via RWW. Port 443 is all that is required to perform most functions of RWW in SBS 2008.
The symptoms suggest that port 443 is not being correctly forwarded to the server, either because of a misconfiguration or failure of the router. Just to make sure DNS is not involved, what results do you get if you try to browse to https://your_public_IP/owa
if I go to https://your_public_IP/owa
It was the router in the end, swapped it out and all worked fine. Tried a factory reset and new firmware but despite all looking good it would not work. The 2900 is on its way back to Draytek confirmed faulty.
Thank you for your help on this, I was thinking it was going to be some firewall/permissions issue in IIS. Nice to be kept on track for the simplest solution.
I have worked with draytek in the UK and have seen these sorts of issues alot, even though drayteks are very robust but sometimes either the firmware gets corrupted by power cuts, abnormal restarts, or faulty chips, which is why when I saw that everything is working locally and you can see packets are coming fine from the outside but something happens when it gets past your draytek - that made me think it must be the router.
Anyway glad its solved. Have a good week ahead
Business Accounts
Answer for Membership
by: demazterPosted on 2009-09-15 at 23:40:15ID: 25342548
If you go to https://remote.mydomain.co m.au/
do you get a firewall/router login?
It's possible this may be using https on port 443 and therefore not forwarding it