SBS 2008 OWA and RWW

I migrated a client from SBS 2003 to SBS 2008. Everything is working fine except I cannot access OWA or Remote Workplace from the internet. I am able to access it internally. The ports in the firewall are open since it wa working with SBS 2003. I did however open port 987 per documentation. When I type "https:\\mail.domain.com\exchange" I receive the "there is a problem with this website's security certificate" I choose "continue to this website" I then get a logon box where I enter user name and password. After this I receive "internet explore cannot display this webpage". I restarted IIS. I also tried accessing by typing the IP address instead of the URL that did not work either. I am definitely going through a learning curve with SBS 2008. What am I missing? Any help would be greatly appreciate. Merry Christmas to all.
RudyVFlAsked:
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Rob WilliamsConnect With a Mentor Commented:
The defaults to access SBS are
Ports 443 and 987
https://remote.domainname.abc
https://remote.domainname.abc/owa

You also need the certificate with SBS2008. You can purchase and install a cert or use the SBS generated self-signed cert. If using the self signed cert, and the machines are members of the domain, they receive the cert through group policy, but if not you need to copy from the following location and install on the client machineblic Downloads\Install Certificate Package.zip
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PBridgesConnect With a Mentor Commented:
With SBS 2008 you are now using Exchange 2007. Your URL is incorrect. Instead of \exchange  it is now \owa.
 
https://mail.companyname.com/owa   
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PBridgesCommented:
Forgot you said you were having trouble with RWW as well. The URL for this is :
 
https://mail.companyname.com/remote   
 
RobWill is correct about the cert though. RWW in 2008 is very picky about the certificate. If you add an external purchased certificate, make sure that you tie it to RWW or RWW will not function properly.
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Rob WilliamsCommented:
SBS 2008 does not require the /remote
Also it is only mail._____-  if you set it to that manually. The default is remote._______
https://remote.domainname.abc
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PBridgesCommented:
Yeah, the mail. was just an example since the original user specified mail. in his URL.
And while it doesn't require the \remote, it works and is something common to users coming from 2003.
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RudyVFlAuthor Commented:
Thank you for all the comments. I tried "https:\\mail.domain.com\owa" and it worked. Ok?, remote is also working. That is a mystery. Still, I don't fully understand the certificate issue. I downloaded the "Install certificate package" and ran the install. Still getting certificate error. Although I can proceed to the login, it is annying and would like to get rid of that.
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PBridgesCommented:
If you are using an internal certificate ( self signed certificate that was created by the server) then you will see this error. If you purchase and install a 3rd party certificate such as one from GoDaddy then the certificate warning will go away.
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RudyVFlAuthor Commented:
Yes, I am using a self signed certificate. So, the only solution is purchasing 3rd party cert? What is the purpose for a self signed certificate from the server?  Just asking for my knowledge. Thanks
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PBridgesCommented:
A self signed certificate still encrypts the traffic, but the remote computer doesn't trust the CA that issued your certificate ( your server) because it doesn't know your server. A 3rd party certificate is trusted by the remote computer because it comes from a well know CA such as GoDaddy, hence you do not get a warning about the certificate.
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