Wietse Venema

Today, Wietse Venema has announced postfix 2.2.0-RELEASE. To quote him:

The official Postfix 2.2 release adopts widely used third-party patches and a bunch of new functionality that was developed over the past year.Below is a summary of the changes. These and more are detailed in the RELEASE_NOTES document, which also describe the incompatible changes that you should be aware of BEFORE upgrading from Postfix
2.1 or earlier.

• TLS and IPv6 support are now built into Postfix, based on code
  from third-party patches.

• Extended query interface for LDAP, MySQL and PostgreSQL with free
  form SQL queries, and domain name filters to reduce unnecessary
  lookups.

Wietse Venema has released postfix 2.1-RELEASE, after a prolonged test and release cycle. postfix 2.1 has several major improvements over the postfix 2.0 series, the documentation is completely rewritten, and the anti-spam features is extensively improved.