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[PR #22746] feat: Add SMTP OAuth 2.0 support for Microsoft Exchange #30037

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opened 2026-02-21 20:46:43 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 20:46:43 -05:00
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Original Pull Request: https://github.com/langgenius/dify/pull/22746

State: closed
Merged: No

Important

  1. Make sure you have read our contribution guidelines
  2. Ensure there is an associated issue and you have been assigned to it
  3. Use the correct syntax to link this PR: Fixes #<issue number>.

Summary

Add comprehensive OAuth 2.0 authentication support for SMTP to address Microsoft's Basic Authentication retirement in September 2025.

Key features:

  • OAuth 2.0 SASL XOAUTH2 authentication mechanism
  • Microsoft Azure AD integration with client credentials flow
  • Backward compatible with existing basic authentication
  • Comprehensive configuration options in .env.example files
  • Enhanced SMTP client with dependency injection for better testability
  • Complete test coverage with proper mocking

Configuration:

  • SMTP_AUTH_TYPE: Choose between 'basic' and 'oauth2' authentication
  • Microsoft OAuth 2.0 settings for Azure AD integration
  • Automatic token acquisition using client credentials flow

Files changed:

  • Enhanced SMTP client with OAuth 2.0 support
  • New mail module structure under libs/mail/
  • Updated configuration system with OAuth settings
  • Comprehensive documentation and setup instructions
  • Complete test suite for OAuth functionality

This change ensures compatibility with Microsoft Exchange Online after Basic Authentication retirement.

close #21217

Screenshots

Before After
... ...

Checklist

  • This change requires a documentation update, included: Dify Document
  • I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
  • I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
  • I've updated the documentation accordingly.
  • I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods
**Original Pull Request:** https://github.com/langgenius/dify/pull/22746 **State:** closed **Merged:** No --- > [!IMPORTANT] > > 1. Make sure you have read our [contribution guidelines](https://github.com/langgenius/dify/blob/main/CONTRIBUTING.md) > 2. Ensure there is an associated issue and you have been assigned to it > 3. Use the correct syntax to link this PR: `Fixes #<issue number>`. ## Summary <!-- Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change. --> Add comprehensive OAuth 2.0 authentication support for SMTP to address Microsoft's Basic Authentication retirement in September 2025. Key features: - OAuth 2.0 SASL XOAUTH2 authentication mechanism - Microsoft Azure AD integration with client credentials flow - Backward compatible with existing basic authentication - Comprehensive configuration options in .env.example files - Enhanced SMTP client with dependency injection for better testability - Complete test coverage with proper mocking Configuration: - SMTP_AUTH_TYPE: Choose between 'basic' and 'oauth2' authentication - Microsoft OAuth 2.0 settings for Azure AD integration - Automatic token acquisition using client credentials flow Files changed: - Enhanced SMTP client with OAuth 2.0 support - New mail module structure under libs/mail/ - Updated configuration system with OAuth settings - Comprehensive documentation and setup instructions - Complete test suite for OAuth functionality This change ensures compatibility with Microsoft Exchange Online after Basic Authentication retirement. close #21217 ## Screenshots | Before | After | |--------|-------| | ... | ... | ## Checklist - [ ] This change requires a documentation update, included: [Dify Document](https://github.com/langgenius/dify-docs) - [x] I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!) - [x] I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change. - [x] I've updated the documentation accordingly. - [x] I ran `dev/reformat`(backend) and `cd web && npx lint-staged`(frontend) to appease the lint gods
yindo added the pull-request label 2026-02-21 20:46:43 -05:00
yindo closed this issue 2026-02-21 20:46:43 -05:00
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Reference: langgenius/dify#30037
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