We are on the tail end of an Exchange 2007 -> 2013 migration of about 1200 users. All users have been migrated with very little issue. However, 1 user is presenting problems with their ActiveSync. They are reporting drastic change in battery life on their device since migration. They have an application monitor app and are saying that their mail program is causing a huge amount of activity.
I've investigated log files and on our legacy Exchange 2007 Client Access/Hub server, I am seeing hundreds of thousands of entries daily (800,000 yesterday alone) in the W3SVC1 log file on the legacy server for this users devices (both iPhone and Andriod). No other users seem to appear in these logs. Here is an excerpt from the log files:
date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) sc-status sc-substatus sc-win32-status time-taken 2016-06-20 06:10:31 10.10.10.132 OPTIONS /Microsoft-Server-ActiveSync/default.eas (null)&Log=RdirTo:https%3a%2f%2femailserver.domain.com%2fMicrosoft-Server-ActiveSync_Error:MisconfiguredDevice_ 443 domain\johns 192.168.2.5 Apple-iPhone7C2/1302.143 451 0 0 0 2016-06-20 06:10:33 10.10.10.132 OPTIONS /Microsoft-Server-ActiveSync/default.eas (null)&Log=RdirTo:https%3a%2f%2femailserver.domain.com%2fMicrosoft-Server-ActiveSync_Error:MisconfiguredDevice_ 443 domain\johns 192.168.2.5 Apple-iPhone7C2/1302.143 451 0 0 312 2016-06-20 06:10:33 10.10.10.132 POST /Microsoft-Server-ActiveSync/default.eas Cmd=Sync&User=DIRAD%5Cscotts&DeviceId=SEC20946411CF0FB&DeviceType=SAMSUNGSMN910V&Log=RdirTo:https%3a%2f%2femailserver.domain.com%2fMicrosoft-Server-ActiveSync_Error:MisconfiguredDevice_ 443 domain\johns 192.168.2.5 Android-SAMSUNG-SM-N910V/101.50101 451 0 0 0 2016-06-20 06:10:33 10.10.10.132 POST /Microsoft-Server-ActiveSync/default.eas Cmd=Sync&User=DIRAD%5Cscotts&DeviceId=SEC20946411CF0FB&DeviceType=SAMSUNGSMN910V&Log=RdirTo:https%3a%2f%2femailserver.domain.com%2fMicrosoft-Server-ActiveSync_Error:MisconfiguredDevice_ 443 domain\johns 192.168.2.5 Android-SAMSUNG-SM-N910V/101.50101 451 0 0 0
We are running Exchange 2013 in a 3 node DAG which is where this users mailbox now resides. The user reports that they are able to retrieve mail on their device at work and while on mobile network, but at home on WiFi they cannot get their mail (probably not related, but maybe.) I've tried removing/recreating the ActiveSync profile on the device, moving the mailbox to different databases, exporting/deleting/importing the mailbox but none of these have fixed the issue. I really don't know how/why the device is getting to the legacy Exchange 2007 CAS/HUB server.
Any ideas?
Thanks,
Pat