I was moving an arbitration mailbox is when I got this error; however I’ve seen this on other mailboxes as well.
MapiExceptionNetworkError: Unable to make connection to the server. (hr=0x80004005, ec=2423)
(PID 5396, Thread 640) Task New-MoveRequest writing error when processing record of index 0. Error: Microsoft.Exchange.MailboxReplicationService.MailboxReplicationTransientException: Service ‘net.tcp://ex01.stu.local/Microsoft.Exchange.MailboxReplicationService’ encountered an exception. Error: MapiExceptionNetworkError: Unable to make connection to the server. (hr=0x80004005, ec=2423)
Diagnostic context:
Lid: 12952 dwParam: 0x6BA Msg: EEInfo: prm[3]: Long val: 1722
Lid: 16280 dwParam: 0x6BA Msg: EEInfo: ComputerName: n/a
Lid: 8600 dwParam: 0x6BA Msg: EEInfo: ProcessID: 2268
Lid: 12696 dwParam: 0x6BA Msg: EEInfo: Generation Time: 2010-06-30 12:15:24:818
Lid: 10648 dwParam: 0x6BA Msg: EEInfo: Generating component: 8
Lid: 14744 dwParam: 0x6BA Msg: EEInfo: Status: 1722
Lid: 9624 dwParam: 0x6BA Msg: EEInfo: Detection location: 1442
Lid: 13720 dwParam: 0x6BA Msg: EEInfo: Flags: 0
Lid: 11672 dwParam: 0x6BA Msg: EEInfo: NumberOfParameters: 1
Lid: 8856 dwParam: 0x6BA Msg: EEInfo: prm[0]: Unicode string: EX03
Lid: 25922 StoreEc: 0x977 —> Microsoft.Exchange.MailboxReplicationService.MailboxReplicationTransientException: Exception details: MapiExceptionNetworkError (80004005): MapiExceptionNetworkError: Unable to make connection to the server. (hr=0x80004005, ec=2423)
Check out Lid: 8856 above, you’ll notice it had an issue with EX03.
When digging deeper in the log you will see the 0x80004005 error code, which could be an authentication problem. So next I tried performing a New-MoveRequest, and this time with validated Exchange admin credentials. That worked the first time I ran into this issue; however it didn’t the last time, which is why I’m writing this blog.
The next few things to check and try are
- Can you ping, telnet on 25, or RDP to the server? (Verifying any means of connectivity here)
- Do you have multiple NICs, perhaps a DAG network?
- Firewalls, always check the firewalls on both sides.
- Resolution, can you resolve the server via NETBIOS name?
My issue this particular time was due to a missing DNS suffix on the primary NIC of the server. I added the old DNS suffix to my NIC on the source server, flushed DNS and was back in business.
Brandon Stuart, PEI
