Exchange Server
A family of Microsoft client/server messaging and collaboration software.
1,292 questions
Cannot authenticate with OAUTH to Exchange using IMAP, client credentials
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Catalin Gidea
0
Reputation points
When trying to authenticate to Exchange with IMAP protocol using OAUTH, client credentials.
We are receiving: A1 NO LOGIN failed
We are using javamail 1.6.2
Azure AD has been configured with conditional access, allowing IMAP connectivity.
Service was created and granted access to the user inbox.
We are obtaining the the Token correctly, but authentication fails (A1 NO LOGIN failed)
Any help would be appreciated.
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