I have a vendor who wants to connect to our Exchange 2013 setup using IMAP4. I have set the IMAP services on the CAS and mailbox servers to automatic and started them. However, if I test IMAP connection it fails telling me "Log onto incoming mail server (IMAP): General authentication failed. None of the authentication methods supported by your IMAP server (if any) are supported on this computer."

I am testing this from a Windows 7 machine using Outlook 2010, the test account has IMAP connection enabled. What have I missed?

• Edited by GADavies Wednesday, February 25, 2015 3:49 PM additional info

It would be helpful to know the settings on the client you're attempting.  Also enter the command "Get-ImapSettings | FL" and post the results here.

Hi,

Also find this article for your reference:

Configuring Authentication for POP3 and IMAP4

https://technet.microsoft.com/en-us/library/aa997188(v=exchg.141).aspx

Someone fix this issue by changing the setting in the advance tab for TLS.

Please also verify the email client is connecting to IMAP on port 993. 

 

Thanks

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Hi,

Any update?

 

Thanks