Migration to Office 365 Failed - CommunicationErrorTransientException at 95%

Anonymous
2016-12-14T08:02:15+00:00

Hello

I am working with a client to the point where they can move their mailboxes to Office 365 themselves.   I am having some issues - the synch works fine but when it comes to finalising i keep getting this error over and over again

FailureType       : CommunicationErrorTransientException

FailureHash       : 19cc

FailureCode       : -2146233088

MapiLowLevelError : 0

FailureSide       : Source

FailureSideInt    : 1

ExceptionTypes    : {Exchange, Transient}

ExceptionTypesInt : {1, 2}

Message           : The call to 'https://smtp.mmca.co.nz/EWS/mrsproxy.svc mmexchange.mmca.local (14.3.227.0

                    caps:05FFFF)' failed. Error details: The remote endpoint no longer recognizes this sequence. This

                    is most likely due to an abort on the remote endpoint. The value of wsrm:Identifier is not a known

                    Sequence identifier. The reliable session was faulted.. --> The remote endpoint no longer

                    recognizes this sequence. This is most likely due to an abort on the remote endpoint. The value of

                    wsrm:Identifier is not a known Sequence identifier. The reliable session was faulted.

My set up is 1 Exchange 2010 server.

Microsoft 365 and Office | Subscription, account, billing | For business | Other

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  1. Anonymous
    2016-12-21T01:58:00+00:00

    Hi Robert,

    I can access https://smtp.mmca.co.nz fine from 2 different internet connections.  I get an IIS7 splash screen.

    I will flick through that other thing via PM>

    Thanks

    Martin

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  2. Anonymous
    2016-12-22T09:31:49+00:00

    Hi Martin,

    Thanks for the information.

    Yes, I know the url is linked to an IIS interface, but it is not right. Normally, the mrsproxy url should be something like mail.contoso.com and it should lead to the online mail sign-in page.

    Given the situation, please go to your EAC in your Exchange server, navigate to servers – virtual directories – EWS, send us a screenshot for the internal and external url.

    Meanwhile, by saying “My set up is 1 Exchange 2010 server.”, do you mean your mailboxes are in Exchange server 2010? I’d like to confirm where your hybrid server is deployed, in Exchange 2010 or 2013.

    Thanks,

    Robert

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  3. Anonymous
    2016-12-22T20:17:14+00:00

    Hi Robert,

    Sorry for being so vague - my mailboxes are all in Exchange 2010 which is also configured as the hybrid server.  I am trying to remote move the mailboxes to Office 365.

    Here are the URLs for the EWS

    [PS] C:\Windows\system32>Get-WebServicesVirtualDirectory | select name,*URL*|fl

    Creating a new session for implicit remoting of "Get-WebServicesVirtualDirectory" command...

    Name                 : EWS (Default Web Site)

    InternalNLBBypassUrl : https://mmexchange.mmca.local/ews/exchange.asmx

    InternalUrl          : https://smtp.mmca.co.nz/EWS/Exchange.asmx

    ExternalUrl          : https://smtp.mmca.co.nz/EWS/Exchange.asmx

    Thanks

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  4. Anonymous
    2016-12-23T10:14:01+00:00

    Hi Martin,

    Thanks for the information in private message. From the report, I can see the connection to the source mailbox on your on-premises failed. There is a proxy server named mmexchange.domain.local in front of the Exchange server. Is it a network firewall in your internal environment? If yes, please check there is any rule that may block the IP addresses or Ports from Exchange Online. I suggest you try to bypass it and test the migration request again.

    Regards,

    Alex

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  5. Anonymous
    2016-12-25T19:53:40+00:00

    Hi Martin,

    Have you checked the last reply? Please let us know the updates when you have time.

    Regards,

    Robert

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