- #Mac mail exchange connecting for mac#
- #Mac mail exchange connecting manual#
- #Mac mail exchange connecting Pc#
#Mac mail exchange connecting for mac#
But if that was the issue, why did Outlook for Mac work without any errors?Īnyhow, I proceeded changing the 100-continue handling by changing it from default setting of RFC-2616 compliant, to RFC-7231 compliant instead:Īfter changing this setting, I ran the EWS test from exrca website again, and as one would expect, the test passed with no issues. It would be easy to blame load balancer at this point and implement the recommended fix by changing 100-continue handling on LoadMaster. In the following sections, users will understand the steps of connecting O365 account in Mac Mail. There is the number of reasons that trigger the need to setup Exchange account on Mac Mail client.
#Mac mail exchange connecting manual#
The issue is also documented by Brian Reid: Exchange Web Services (EWS) and 501 Error and Phil Sharp: Kemp Load Balancer and Lync Unified Contact Store Integration Note.Īfter enabling L7 debug tracing on my KEMP LoadMaster I observed the same error mentioned in the above articles “lb100 kernel: L7: badrequest-client_read (-501): Tools, make sure the status is Online and your Mac connected to network. What I didn’t know at that point is which element in the HTTP request was causing the server to reject the request. The error is somewhat misleading as when you look at EWS logs on Exchange server, you see that the server rejected the request with HTTP error 400 which translated to “bad request”. Mac Mail would show “Account Error” which read “Unable to connect … The server returned error: Connections to host on default ports failed.”
#Mac mail exchange connecting Pc#
It is worth pointing out that while Outlook 2013/2016 on PC use MAPI/HTTP or RPC/HTTP to connect to Exchange 2013/2016 servers, both clients on Mac (Mac‘s own Mail client and Microsoft Outlook for Mac) use EWS to connect. Our company uses two-step authentication using ADAL. Latest Microsoft Outlook for Mac did not exhibit any issues either! I also reconstructed my exchange mailbox with no success (even with deleting all /Library/Mail. I work in a corporate environment and my email has just been migrated to Exchange 365. Microsoft Outlook 2013/2016 clients on PC did not exhibit any issues.
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