Postfix is an attempt to provide an alternative to the widely-used Sendmail program. Postfix attempts to be fast, easy to administer, and hopefully secure, while at the same time being sendmail compatible enough to not upset your users.
License: IBM Public License
Changes:
The Postfix 2.5 "postfix upgrade-configuration" command now works even with Postfix 2.4 or earlier versions of the postfix command. When installing Postfix 2.5.0 without upgrading from an existing master.cf file, the new master.cf file had an incorrect process limit for the proxywrite service. This service is used only by the obscure "smtp_sasl_auth_cache_name" and "lmtp_sasl_auth_cache_name" configuration parameters. Someone needed multi-line support for header/body Milter replies. The LDAP client's TLS support was broken in several ways.
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