I have these logs to add.
We don't have control over the seiu1199ne.org domain and don't want to use that for autodiscovery anymore.
[PS] D:\Program Files\Microsoft\Exchange Server\V15\scripts>Test-ActiveSyncConnectivity -MailboxCredential (Get-Credenti
al nehc-1199\extest_c99e36b510484) -UseAutodiscoverForClientAccessServer | fl
RunspaceId : 6881ac36-5b0c-4c41-9811-1863a6c5e28d
LocalSite :
SecureAccess : True
VirtualDirectoryName :
Url :
UrlType : Unknown
Port : 0
ConnectionType : Plaintext
ClientAccessServerShortName : Exg
LocalSiteShortName :
ClientAccessServer : Exg.NEHC-1199.local
Scenario : Autodiscover Client Access server
ScenarioDescription : An attempt was made to contact Autodiscover server Exg.NEHC-1199.local from
(Exg.NEHC-1199.local) for Client Access server information using NTLM for
authentication.
PerformanceCounterName :
Result : Failure
Error : [System.Net.WebException]: The underlying connection was closed: Could not establish
trust relationship for the SSL/TLS secure channel. Inner error
[System.Security.Authentication.AuthenticationException]: The remote certificate is
invalid according to the validation procedure.
UserName : extest_c99e36b510484
StartTime : 3/20/2015 3:22:22 PM
Latency : 00:00:00.0156243
EventType : Error
LatencyInMillisecondsString :
Identity :
IsValid : True
ObjectState : New
RunspaceId : 6881ac36-5b0c-4c41-9811-1863a6c5e28d
LocalSite :
SecureAccess : True
VirtualDirectoryName :
Url :
UrlType : Unknown
Port : 0
ConnectionType : Plaintext
ClientAccessServerShortName : Autodiscover
LocalSiteShortName :
ClientAccessServer : Autodiscover.seiu1199ne.org
Scenario : Autodiscover Client Access server
ScenarioDescription : An attempt was made to contact Autodiscover server Autodiscover.seiu1199ne.org from
(extest_c99e36b510484@seiu1199ne.org)
for Client Access server information using NTLM
for authentication.
PerformanceCounterName :
Result : Failure
Error : [System.Net.WebException]: The remote name could not be resolved:
'autodiscover.seiu1199ne.org'
UserName : extest_c99e36b510484
StartTime : 3/20/2015 3:22:22 PM
Latency : 00:00:00.0156337
EventType : Error
LatencyInMillisecondsString :
Identity :
IsValid : True
ObjectState : New
RunspaceId : 6881ac36-5b0c-4c41-9811-1863a6c5e28d
LocalSite :
SecureAccess : True
VirtualDirectoryName :
Url :
UrlType : Unknown
Port : 0
ConnectionType : Plaintext
ClientAccessServerShortName : seiu1199ne
LocalSiteShortName :
ClientAccessServer : seiu1199ne.org
Scenario : Autodiscover Client Access server
ScenarioDescription : An attempt was made to contact Autodiscover server seiu1199ne.org from
(extest_c99e36b510484@seiu1199ne.org)
for Client Access server information using NTLM
for authentication.
PerformanceCounterName :
Result : Failure
Error : [System.Net.WebException]: Unable to connect to the remote server Inner error
[System.Net.Sockets.SocketException]: No connection could be made because the target
machine actively refused it 52.1.210.123:443
UserName : extest_c99e36b510484
StartTime : 3/20/2015 3:22:23 PM
Latency : 00:00:01.0377464
EventType : Error
LatencyInMillisecondsString :
Identity :
IsValid : True
ObjectState : New