Outlook throttled message7/11/2023 Outlook for mac)/OWA(Outlook on the web) user can have against an Exchange server at one time. Get-OrganizationConfig | fl MapiHttpEnabledįor the three parameter RCAMaxConcurrency, EASMaxConcurrency, EwsMaxConcurrency and OwaMaxConcurrency, they are used to specifies how many concurrent connections an Exchange RPC(RPC client access service)/EAS(ActiveSync - Mobie device)/EWS(Exchange Web service, e.g. For users of email services: email throttling means intentional limiting the amount of email messages sent through an ESP’s server at one time.For email services: email throttling is slowing-down or blockage of mail sending due to an exceeded email delivery rate.This term may have two definitions depending on the side it’s implemented on. (If the value of CAS mailbox shows blank and the one of organization config shows True, or the value of CAS mailbox shows True, it represents that your mailbox is using MAPI over HTTP) Get-CASMailbox -Identity | fl MapiHttpEnabled In the protocol column it shows "HTTP" everywhere., your mailboxes should use MAPI over HTTP for Outlook to access Exchange, you could try running the following commands to verify that: My question is: Are those the correct parameters I have to change? Which parameters should I change in such a use case? Am I missing anything?īased on your description having 20+ connections on a client. In the protocol column it shows "HTTP" everywhere.Īccording to microsofts documentation Set-ThrottlingPolicy increased RCAMaxConcurrency and EASMaxConcurrency for Outlook and EwsMaxConcurrency and OwaMaxConcurrency because of outlook connection status protocol column to a more reasonable limit for their case. In Outlook connection status window I can see that for each mailbox delegation there is at least one new connection created, having 20+ connections on a client. The customers requirement is that each team member can access the mailboxes of the other team members using "full delegation".Īfter a quick search I ran into values I need to change in the throttling policy. At a customers site with 20+ employees per team I get an outlook warning message roughly translated to "The amount of elements opened at once has been limited by the server administrator". If youre using Outlook for Windows, see Fixes or workarounds for recent issues in Outlook for Windows.
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