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OAuth M365 Send Failures

Is anybody seeing issues with new Microsoft Auth methods for sending mail from latest versions of QuoteWerks. We've checked the API permissions and re-granted Admin Consent in the Azure AD App, and we've disconnected and reconnected the users from their M365 accounts many times already - and have worked with QW support to help.

The error we're getting is:


Unable to authenticate user for SMTP Email send


Error (12219) Authenticating user for SMTP Email send.

Error from SMTP server is 'Specified command was aborted by the remote host'

Authentication Details:


SMTPPort: 587





In product the error looks like:


Any ideas?


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