Thank you for sharing your solution Stuart.

Gary

On Fri, Feb 3, 2023, 14:47 Stuart Maclean <macl...@mrvsys.com> wrote:

> It turns out that the commons net IMAP package can do oauth2 style of
> authentication just fine.  I can do this:
>
> String userNamePlusAccessToken = combine( username, accessToken )
>
> according to e.g.
>
>
> https://learn.microsoft.com/en-us/exchange/client-developer/legacy-protocols/how-to-authenticate-an-imap-pop-smtp-application-by-using-oauth
>
> or
>
> https://developers.google.com/gmail/imap/xoauth2-protocol
>
> I got the OAuth2 accessToken via use of msal4j:
>
> https://github.com/AzureAD/microsoft-authentication-library-for-java
>
> Then
>
> AuthenticatingIMAPClient aic = new AuthenticatingIMAPClient(true);
>
>    aic.connect( server );
>
>     aic.auth( AuthenticatingIMAPClient.AUTH_METHOD.XOAUTH2,
>                     userNamePlusAccessToken, "passwordNotUsed" );
>
> Just wanted this documented should others need to solve same problem.
>
> Stuart
>
>
>
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