Solved

MAPI Referral Service enpoint RPC_S_SERVER_UNAVAILABLE error

Posted on 2014-09-20
3
2,142 Views
Last Modified: 2015-08-18
Trying to perform a cutover migration from Exchange 2003 to Exchange Online. Have run testconnectivity.microsoft.com many times, read through tons (more than a few times), gone through lots of troubleshooting but still ending with the same failure. Interestingly, Outlook 2007 does work using the RPC/HTTP configuration without issue. https://mail.exchsvr.com/rpc/rpcproxy.dll returns blank screen. Hoping that someone can provide some insight. Feeling like it is some small detail that is missing, but it has completely eluded me. Below is the latest result from testconnectivity:

 	Testing Outlook connectivity.
 	The Outlook connectivity test failed.
 	 	Additional Details

 	 	Test Steps
 	 	Testing RPC over HTTP connectivity to server mail.exchsvr.com
 	RPC over HTTP connectivity failed.
 	 	Additional Details

 	 	Test Steps
 	 	Attempting to resolve the host name mail.exchsvr.com in DNS.
 	The host name resolved successfully.
 	 	Additional Details

 	Testing TCP port 443 on host mail.exchsvr.com to ensure it's listening and open.
 	The port was opened successfully.
 	 	Additional Details

 	Testing the SSL certificate to make sure it's valid.
 	The certificate passed all validation requirements.
 	 	Additional Details

 	 	Test Steps

 	Checking the IIS configuration for client certificate authentication.
 	Client certificate authentication wasn't detected.
 	 	Additional Details

 	Testing HTTP Authentication Methods for URL https://mail.exchsvr.com/rpc/rpcproxy.dll?mail.exchsvr.local:6002.
 	The HTTP authentication methods are correct.
 	 	Additional Details

 	Attempting to ping RPC proxy mail.exchsvr.com.
 	RPC Proxy was pinged successfully.
 	 	Additional Details

 	Attempting to ping the MAPI Mail Store endpoint with identity: mail.exchsvr.local:6001.
 	The endpoint was pinged successfully.
 	 	Additional Details

 	Testing the MAPI Address Book endpoint on the Exchange server.
 	The address book endpoint was tested successfully.
 	 	Additional Details

 	 	Test Steps

 	Testing the MAPI Referral service on the Exchange Server.
 	An error occurred while the Referral service was being tested.
 	 	Additional Details

 	 	Test Steps
 	 	Attempting to ping the MAPI Referral Service endpoint with identity: mail.exchsvr.local:6002.
 	The attempt to ping the endpoint failed.
 	  Tell me more about this issue and how to resolve it

 	 	Additional Details
 	The RPC_S_SERVER_UNAVAILABLE error (0x6ba) was thrown by the RPC Runtime process. 
Elapsed Time: 1022 ms. 

Open in new window

Thanks for any assistance!
0
Comment
Question by:Markl0805
3 Comments
 
LVL 29

Accepted Solution

by:
Sudeep Sharma earned 500 total points
ID: 40336124
Hi  Markl0805,

In My opinion the reason is just above the error. Which is

=========================================================================
Test Steps
              Attempting to ping the MAPI Referral Service endpoint with identity: mail.exchsvr.local:6002.
       The attempt to ping the endpoint failed.
==========================================================================

Please make sure that ping is working.

Sudeep
0
 

Author Closing Comment

by:Markl0805
ID: 40354351
Hi Sudeep,
Thanks for the response. This is where the issue was. Resolving the problem with port 6002 was a whole other issue. 6001 and 6004 were responding properly and 6002 was open, but ping on 6002 was still not responding properly.

Sorry for the delayed response...got pulled in too many other directions at the same time while trying to resolve this issue.
0
 

Expert Comment

by:acdevadmin
ID: 40934766
How are you guys pinging ports??
0

Featured Post

Want to promote your upcoming event?

Attending an event? Speaking at a conference? Or exhibiting at a tradeshow? Easily inform your contacts by using a promotional banner in your email signature. This will ensure your organization’s most important contacts are in the know.

Join & Write a Comment

Local Continuous Replication is a cost effective and quick way of backing up Exchange server data. The following article describes the steps required to configure Local Continuous Replication. Also, the article tells you how to restore from a backup…
Is your Office 365 signature not working the way you want it to? Are signature updates taking up too much of your time? Let's run through the most common problems that an IT administrator can encounter when dealing with Office 365 email signatures.
In this video we show how to create a Resource Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: Navigate to the Recipients >> Resources tab.: "Recipients" is our default selection …
The video tutorial explains the basics of the Exchange server Database Availability groups. The components of this video include: 1. Automatic Failover 2. Failover Clustering 3. Active Manager

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now