[An on-line version of this announcement will be available at http://www.postfix.org/announcements/postfix-3.5.5.html]
Fixed in Postfix versions 3.5.5, 3.4.15, 3.3.13, 3.2.18:
Workaround for unexpected TLS interoperability problems when Postfix runs on OS distributions with system-wide OpenSSL configurations.
Memory leaks in the Postfix TLS library, the largest one involving multiple kBytes per peer certificate.
You can find the updated Postfix source code at the mirrors listed at http://www.postfix.org/.