Exchange 2003 - Unable to make OMA connection

Hello and thank you for taking the time to look at my issue.

We have Ex 2003 running and have been having Outlook Mobile Access running for months.  Now we are getting username/password incorrect messages.  I checked to make sure OMA is enabled for the users.

Please advise.

Thank you and have a great day,

Don
GEMCCAsked:
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GEMCCConnect With a Mentor Author Commented:
The client changed web hosting companies and had DNS changes made without realizing the impact of mail.  Made the appropriate changes, now everything is fine.
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SreRajCommented:
Hi Don,

Please verify that SSL certificate used is not expired.

1. Click Start, point to All Programs, point to Administrative Tools, and then click Internet Information Services (IIS) Manager.
2. In Internet Services Manager, in the console tree, expand SERVERNAME (your local computer), and then expand Web Sites.
3. In the console tree, right-click Default Web Site, and then click Properties.
4. In the Default Web Site Properties dialog box, click Directory Security.
5. On the Directory Security tab, click Server Certificate.
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GEMCCAuthor Commented:
Hi SreRaj,

The certificate is not due to expire until 26 January 2018.

Any other ideas?

Have a great day,

Don
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SreRajCommented:
You could try restarting IIS with the command iisreset

Also please check application log in event viewer for any critical alerts logged regarding OMA or IIS.

You could also test connectivity from internet using https://testexchangeconnectivity.com
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GEMCCAuthor Commented:
OK, I always forget about https://testexchangeconnectivity.com.  Anyway, here are the results:

 
 The Microsoft Connectivity Analyzer is testing Exchange ActiveSync.  
  The Exchange ActiveSync test failed.  
 
 Attempting the Autodiscover and Exchange ActiveSync test (if requested).
  Testing of Autodiscover for Exchange ActiveSync failed.
 
 Attempting each method of contacting the Autodiscover service.
  The Autodiscover service couldn't be contacted successfully by any method.
 
 Attempting to test potential Autodiscover URL https://domainname.org/AutoDiscover/AutoDiscover.xml 
  Testing of this potential Autodiscover URL failed.
 
 Attempting to resolve the host name domainname.org in DNS.
  The host name resolved successfully.
 
IP addresses returned: 216.185.152.151

 Testing TCP port 443 on host domainname.org to ensure it's listening and open.
  The specified port is either blocked, not listening, or not producing the expected response.
 
 Attempting to test potential Autodiscover URL https://autodiscover.domainname.org/AutoDiscover/AutoDiscover.xml 
  Testing of this potential Autodiscover URL failed.
 
 Attempting to resolve the host name autodiscover.domainname.org in DNS.
  The host name couldn't be resolved.  

 Attempting to contact the Autodiscover service using the HTTP redirect method.
  The attempt to contact Autodiscover using the HTTP Redirect method failed.
 
 Attempting to resolve the host name autodiscover.domainname.org in DNS.
  The host name couldn't be resolved.
 
Host autodiscover.domainname.org couldn't be resolved in DNS InfoDomainNonexistent.
 
 Attempting to contact the Autodiscover service using the DNS SRV redirect method.
  The Microsoft Connectivity Analyzer failed to contact the Autodiscover service using the DNS SRV redirect method.  
 
 Attempting to locate SRV record _autodiscover._tcp.domainname.org in DNS.
  The Autodiscover SRV record wasn't found in DNS.

It appears someone has changed A record settings in DNS, correct?

Thanks for your help.

Have a great day,

Don
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SreRajConnect With a Mentor Commented:
The first url domainname.org is getting resolved to an IP address, but it's unable to provide autodiscover service. Please verify this IP is your internet facing front-end.
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GEMCCAuthor Commented:
Issue resolved
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