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Article ID: 116199, created on May 30, 2013, last review on Jan 8, 2015

  • Applies to:
  • Operations Automation


Exchange tasks fail in POA with the error message 'MapiExceptionNetworkError: Unable to make connection to the server. (hr=0x80040115, ec=-2147221227)'.

More detailed diagnostics is provided in the example below:
Destination host 'EXCH01.hosting.local' (#172), IP '' : Provisioning request failed. Unknown error 0x80131600 [<response><errorContext description="MapiExceptionNetworkError: Unable to make connection to the server. (hr=0x80040115, ec=-2147221227)
Diagnostic context:
Lid: 10648 dwParam: 0x6D9 Msg: EEInfo: Generating component: 2
Lid: 14744 dwParam: 0x6D9 Msg: EEInfo: Status: 1753
Lid: 9624 dwParam: 0x6D9 Msg: EEInfo: Detection location: 501
Lid: 13720 dwParam: 0x6D9 Msg: EEInfo: Flags: 0
Lid: 11672 dwParam: 0x6D9 Msg: EEInfo: NumberOfParameters: 4
Lid: 8856 dwParam: 0x6D9 Msg: EEInfo: prm[0]: Unicode string: ncacn_ip_tcp
Lid: 8856 dwParam: 0x6D9 Msg: EEInfo: prm[1]: Unicode string: EXCH01.hosting.local
Lid: 12952 dwParam: 0x6D9 Msg: EEInfo: prm[2]: Long val: -1527653632
Lid: 15000 dwParam: 0x6D9 Msg: EEInfo: prm[3]: Pointer val: 0x0A7C1F28
Lid: 19778
Lid: 27970 StoreEc: 0x80040115
Lid: 17730
Lid: 25922 StoreEc: 0x80040115
Identity='LDAP://CN=mbox,OU=S001000101,OU=Provider,OU=Hosting,DC=hosting,DC=local'" code="0x80131600" executeSeqNo="2"><errorSource namespace="Exchange 2007 Provider" procedure="ModifyResourceMailbox"/><errorSource namespace="SW Managed Exchange" procedure="ModifyResourceMailbox"/></errorContext></response>]


Most likely there is problem with establishing network connection to the target server menitoned in the error message.


1. Check that the problem Exchange server is up and running.

2. Check that all Exchange services configured for automatic start are running, use the Services MMC snap-in.

3. Make sure that the following network ports are open on the targer Exchange server:

  • 53 (TCP) DNS
  • 88 (TCP) Kerberos
  • 135 (TCP) RPC End Point
  • 389 (TCP) LDAP
  • 443 (TCP) HTTPS Mailbox Replication Proxy service uses port 443 to communicate with other Exchange 2010 client access server via HTTPS.
  • 445 (TCP) Microsoft-DS Service
  • 808 (TCP) Mailbox Replication Service uses to communicate
  • 3268 LDAP
  • 1024 > 65535

Also, see the list of ports to be open in the POA Firewall Configuration Guide:

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