Exim 4.99-RC1 Release Overview
The Exim project has officially released the first release candidate of Exim 4.99, a significant update to the Mail Transport Agent (MTA) that introduces a variety of enhancements and fixes since the previous version, Exim 4.98. This update is aimed at improving functionality, performance, and security, and is now available for testing in both tarball format and directly from the project's Git repository.
Availability for Testing
- Download Links:
- Tarball: [Exim 4.99-RC1 Tarball](https://ftp.exim.org/pub/exim/exim4/test)
- Git Repository: [Exim Git Repository](https://code.exim.org/exim/exim) (tag: exim-4.99-RC1)
Verification Process
Users are encouraged to verify the authenticity of the release candidate using the provided key:
- Key ID: 0xBCE58C8CE41F32DF
New Features in Exim 4.99-RC1
The new release candidate comes with a host of enhancements, including:
- Sieve Inbox Option: Introduces a new option for redirect routers.
- Connection ID Tracking: A variable to track connection IDs has been added.
- New SMTP Fail Events: Added events for SMTP protocol and syntax failures.
- Expanded Lookup Support: JSON and LDAP lookup support, among others, has been integrated.
- Loadable Modules: Router and authenticator drivers can now be built as loadable modules.
- DMARC Alignment Variables: Two new variables for DMARC alignment have been introduced.
- IPv6 Support: Enhanced support for IPv6 addresses in database lookups.
- TLS SRV Records: Added support for TLS availability as indicated by SRV records.
- Enhanced Logging Options: New options for filtering log ports and distinguishing TLS in logs.
Security Enhancements and Bug Fixes
Exim 4.99-RC1 addresses several critical security vulnerabilities:
- CVE-2025-26794
- CVE-2025-30232
In addition to security improvements, the release includes notable bug fixes, such as enhancing hintsdb support with SQLite, correcting coding errors in SPA authentication, improving DKIM signing, and more.
Conclusion
With the release of Exim 4.99-RC1, users and developers are invited to test the new features and report any issues. This release marks an important step in the continued evolution of Exim, emphasizing security and functionality. As the project moves towards a stable release, feedback from the community will be crucial in refining the software.
For more details and to participate in testing, please refer to the provided links
The Exim project has officially released the first release candidate of Exim 4.99, a significant update to the Mail Transport Agent (MTA) that introduces a variety of enhancements and fixes since the previous version, Exim 4.98. This update is aimed at improving functionality, performance, and security, and is now available for testing in both tarball format and directly from the project's Git repository.
Availability for Testing
- Download Links:
- Tarball: [Exim 4.99-RC1 Tarball](https://ftp.exim.org/pub/exim/exim4/test)
- Git Repository: [Exim Git Repository](https://code.exim.org/exim/exim) (tag: exim-4.99-RC1)
Verification Process
Users are encouraged to verify the authenticity of the release candidate using the provided key:
- Key ID: 0xBCE58C8CE41F32DF
New Features in Exim 4.99-RC1
The new release candidate comes with a host of enhancements, including:
- Sieve Inbox Option: Introduces a new option for redirect routers.
- Connection ID Tracking: A variable to track connection IDs has been added.
- New SMTP Fail Events: Added events for SMTP protocol and syntax failures.
- Expanded Lookup Support: JSON and LDAP lookup support, among others, has been integrated.
- Loadable Modules: Router and authenticator drivers can now be built as loadable modules.
- DMARC Alignment Variables: Two new variables for DMARC alignment have been introduced.
- IPv6 Support: Enhanced support for IPv6 addresses in database lookups.
- TLS SRV Records: Added support for TLS availability as indicated by SRV records.
- Enhanced Logging Options: New options for filtering log ports and distinguishing TLS in logs.
Security Enhancements and Bug Fixes
Exim 4.99-RC1 addresses several critical security vulnerabilities:
- CVE-2025-26794
- CVE-2025-30232
In addition to security improvements, the release includes notable bug fixes, such as enhancing hintsdb support with SQLite, correcting coding errors in SPA authentication, improving DKIM signing, and more.
Conclusion
With the release of Exim 4.99-RC1, users and developers are invited to test the new features and report any issues. This release marks an important step in the continued evolution of Exim, emphasizing security and functionality. As the project moves towards a stable release, feedback from the community will be crucial in refining the software.
For more details and to participate in testing, please refer to the provided links
Exim 4.99-RC1 released
The first release candidate for the Exim 4.99 Mail Transport Agent has been released for testing, marking a new milestone towards a major update with numerous improvements and fixes since Exim 4.98. The release candidate is available for testing as a tarball or directly from Git. Notable features and enhancements include support for JSON, LDAP lookup, loadable modules, and improved security fixes for CVE-2025-26794 and CVE-2025-30232.
