This article how to setup Draytek Vigor 2760 with iiNet FTTN/VDSL2 NBN plan.

iiNet supplied modem Technicolor TG789vac is blocking port 443 so OWA and Exchange ActiveSync for mobile clients are not working. Port blocking is enabled by default on iiNet so disable it via Toolbox or by ringing them.

I had to install the previous modem Draytek Vigor2760 back. NBN in client's premise is Fibre to the Node, so we are using the old phone line socket that was originally used when the client had the ADSL.

Screenshots below came up from an information combined from the following links:

Make sure you have the latest firmware for Vigor2760. At the time of writing, I am using the firmware from

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When you open Exchange Console -> Tools -> Queue, you receive an error saying ‘Microsoft Exchange can’t connect to the Queue Viewer server on computer “server.itropics.local”. Verify that the Microsoft Exchange Transport service is started. It was running command ‘get-queue –ResultSize ‘1000’ –ReturnPageInfo $true –SortOrder ‘+NextHopDomain’ –SearchForward $true –BookmarkObject $null –BookmarkIndex ‘-1’ –IncludeBookmark $false –server ‘server.itropics.local”.

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I believe this is caused by the 512byte sector size after I replaced one of the HDD which is part of RAID 1. There is no detailed log of the cause if you go to Event Viewer -> Applications and Servuces Logs -> Microsoft -> Windows -> CertificateServicesClient-CredentialRoaming (anyway, I don’t know if that should where I should be looking at).

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Error: Could not initialize the Jet engine: system database not found. Failed to open DIT for AD DS/LDS instance NTDS. Error -2147418113


Make sure to always do a backup before performing the suggestion solution below. The solution worked for me, I'm not sure if it will work for you, your choice to follow the solution below.

Make sure that ntds.dit file exists inside C:\Windows\ntds\

You can copy the ntds.dit from running same Windows server or restore from backup, but make sure to delete the key System\CurrentControlSet\Services\NTDS\Parameters\DSA Database Epoch

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