Questions about Certificates and MAPI over HTTP in Exchange 2016

Arnold MIshaev 216 Reputation points
2021-11-19T16:17:48.137+00:00

Hello,

We've got a new client who has exchange 2016 , only one server without DAG and Edge services.
the organization using outlook anywhere and inside organization via autodiscover and mobile activesync around the world.

1) there is a lot of certificate which in "pending request" status, and certificates which in expired status.
what are the consequences of deleting those certificates?

2) the organization using RPC over HTTP, and we would like to using MAPI protocol instead RPC.
What is the consequences of allowing MAPI over HTTP protocol , there will be any impact on users?

Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Andy David - MVP 152.3K Reputation points MVP
    2021-11-19T17:17:37.74+00:00

    there is a lot of certificate which in "pending request" status, and certificates which in expired status.
    what are the consequences of deleting those certificates?

    Typically none since they arent actually being used if pending or expired.

    What is the consequences of allowing MAPI over HTTP protocol , there will be any impact on users?

    With the change in protocol, once Outlook autodiscovery picks up the change, they will be prompted to restart Outlook ( An administrator has made a change dialog box)
    Restarting should allow things to work with the change.

    However, some clients may require a new Outlook profile.

    I recommend only enabling a few at first and testing before enabling org-wide

    https://learn.microsoft.com/en-us/exchange/clients/mapi-over-http/configure-mapi-over-http?view=exchserver-2019

    151091-image.png

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  2. Arnold MIshaev 216 Reputation points
    2021-11-20T20:41:38.213+00:00

    Thanks @Andy David - MVP

    I would follow by the article you attached.

    in our exchange server, we have two databases first one located in "C" system drive we would like to rename it and moving datastore to different partition(separated virtual hard drive)

    in renaming process follow by command below, there would be any downtime impact on mailboxes?
    and there need to take other action beside renaming ?
    Set-MailboxDatabase "current name" -Name "New Name"

    the datastore contain 125 mailboxes which whole capacity is 250GB, followed by this command below it would force to dismount datastore before moving, we aware of that
    the question is could we calculate the time it would take to moving to different location? and there need to take other actions after run this command?
    Move-DatabasePath "Databasename" -EdbFilePath "path" -LogFolderPath "Path"


  3. Andy David - MVP 152.3K Reputation points MVP
    2021-11-21T13:26:53.973+00:00

    Ok, this is a new question. but, you can rename yes without issue - note this does not change the file name itself - just what shows in EAC and Powershell as the name .
    If you decide to run Move-DatabasePath , yes, you would dismount and the time it takes to copy ( prob 10-15 minutes) would b downtime. Once done, remount and thats it - no other actions required.

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