Unable to receive e-mails on SBS 2003 and exchange 2003

Hi,

We are using windows SBS 2003 and exchange 2003 and client machines using windows XP pro with Outlook 2003. We had some problem with our router and had to replace the router. After connecting the new Netgear the internet and network connection is back on however unable to receive e-mails.  We can send outgoing emails without any problem. I have setup the new router to the same configuration as it was before (I mean with same internal IP, Gateway, DNS etc). I have also check with our web hosting company and they did confirm the e-mails are forwarded to our external IP address which is Address Is 81.149.40.33. This IP is provided by our ISP (BT). And the ISP also confirmed that are we currently using the same external ip.

Please find enclosed IP details and also the DNS test report for further info.

Domain name: http://www.on-showltd.com/

Please reply at the earliest.

Regards,
Neil

old-IP-configuration.JPG
new-IP-configuration.JPG
mx-records.JPG
neilchearAsked:
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EfrenMCommented:
Hi Neil

i tried both ips and it seems port 110 pop3 is not open, what type of connection where using? exchange,pop3,imap etc
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ccnsCommented:
seems you have two conflicting ip addresses which one is which just to clarify?

82.133.135.104 - mx records should point to your exchange server, which should be the external Ip address of your router.
81.149.40.33
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ccnsCommented:
Also what it the error message when sending emails do you get a bounce back straight away?
please post this also if you can.
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tharsternCommented:
On the server, go to http://whatsmyip.org to double check the ip address your router is using.

Also I assume that you have forwarded port 25 to your server in the router? If not, thats what you need to do.


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neilchearAuthor Commented:
I guess the router firewall was causing problem I created a rule to allow Pop3 and smtp ports and then checked e-mail through outlook web access and can see external e-mails coming in. I hope that resolved the problem however I cannot logon to outlook web access url from outside the network which is http://192.168.2.200/exchange and also cannot logon to client computers using VNC?
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EfrenMCommented:
neil chances are your still having firewall problems
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EfrenMCommented:
http= 80 https= 443. vnc= 5900 by default
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neilchearAuthor Commented:
I have added http= 80 https= 443 but cannot find vnc=5900 under router firewall rules

And by the way what is the port no and service for printer?
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EfrenMCommented:
have you enabled internet printing?
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EfrenMCommented:
sorry forgot you might have to make a custom rule for the vnc, also what vnc are you using? becareful because some vnc are vulnerable
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neilchearAuthor Commented:
I don't see the option to create custom rule to add VNC. Please find enclosed attachment those are the only services listed.
firewall-rule-services.JPG
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Windows Server 2003

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