Exchange 2013 Activesync connectivity issue
Posted on 2016-09-08
Currently troubleshooting some issues with the activesync after a FW change.
So far not related to the FW change. Mail flow is working and all seems fine (logs from FW)
Activesync is not functioning correctly.
when using an device and adding a users account - Autodiscover does its part and find the mailbox and connects to the device.
So fra so good.
When opening the mailbox it is empty and states its waiting to be synched.
Manually synching does nothing.
Trying to set up the same account on a Sony Xperia give error on root certificate. Manually adding the exchange config gives access and all works.
When runnning -> test-activesyncconnectivity it give and failure in response. Using the -TrustAnySSLcertificate give succes on all scenarios.
Testing with a user i changed some of the auth settings in acticesync virtual directory in IIS just to be able to do some changes. The recyceld the syncapppool. The user could then send a mail from an Iphone. Testing test-activesyncconnectivity gave an success on all scenarios. 30 sec later, failure on test-activesynconnectivity, and user could not send mail.
I have gone through the SSL certificate on the Exchange (it's a DAG) servers. Only issue i could find was that the SSL certificate was in SHA-1 and that would be on the deprecate plan for 1/1-17.
So, Any suggestion to where the issue resides ?