Account lock out in Exchange Server 2016 environment

azhar Nasim 0 Reputation points
2023-03-17T10:01:28.7+00:00

We have Active Directory and Exchange Server 2016 DAG with 4 members

Accounts are continuously locked out . When we try to find the error it gives the originating Name of traffic to Exchange Servers. Why this is happening and how it can be resolved

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  1. Jarvis Sun-MSFT 10,181 Reputation points Microsoft Vendor
    2023-03-20T09:17:17.7866667+00:00

    Hi @azhar Nasim ,

     

    By research, there are many possible reasons for account lockout, to narrow the scope, please clarify the following confusion:

     

    “Accounts are continuously locked out”

    1. Is it that some specific accounts are locked out and there is no problem with other accounts?

     

    “When we try to find the error it gives the originating Name of traffic to Exchange Servers”

    1. Where you get this info and can you provide the detailed message of this?

     

    Based on my experience, if they are some specific accounts, it may be related to mobile devices. You can check which devices are connected to the account through ActiveSync through the following command:

    Get-ActiveSyncDeviceStatistics -Mailbox <mailbox name> |ft DeviceType， DeviceUserAgent， LastSuccesSync

     

    Additionally, you can try to remove the local Windows credentials and see if the problem persists.

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