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.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
This version contains a fix for CVE-2011-1720, which affects Postfix SMTP server configurations that use Cyrus SASL authentication. This defect was introduced with the Postfix SASL patch, and is present in all Postfix versions where the command "postconf mail_release_date" reports a value of 20000314 (March 14, 2000) or greater. Note that CVE-2011-1720 does not affect Postfix SMTP servers that use Dovecot SASL authentication. It also does not affect the common Postfix SMTP server configurations that use only Cyrus SASL mechanisms PLAIN and LOGIN.
When a client disconnected and then reconnected before all DNSBL results for the earlier session arrived, DNSBL results for the earlier session would be added to the score for the later session. The SMTP client did not support mail to [ipv6:ipv6addr]. FreeBSD closefrom() was back-ported to FreeBSD 7, breaking FreeBSD 7.x support retroactively. The SUN compiler had trouble with a pointer expression of the form "("text1" "text2") + constant''.
This release contains a fix for CVE-2011-0411, which allows plain text command injection with SMTP sessions over TLS. This defect was introduced with Postfix version 2.2. The same flaw exists in other implementations of the STARTTLS command.
The postscreen daemon is now included with the stable release. postscreen now supports TLS and can log the rejected sender, recipient, and helo information. Support for DNS whitelisting and for pattern matching to filter the responses from DNS whitelist/blacklist servers was added. Improved message tracking across SMTP-based content filters; the after-filter SMTP server can log the before-filter queue ID. Read-only support for SQLite databases was added. Support for 'footers' that are appended to SMTP server "reject" responses was added.
