[An on-line version of this announcement will be available at http://www.postfix.org/announcements/postfix-3.4.9.html]
Fixed in all supported stable releases:
Bug (introduced: Postfix 3.1): smtp_dns_resolver_options were broken while adding support for negative DNS response caching in postscreen. Postfix was inadvertently changed to call res_query() instead of res_search(). Reported by Jaroslav Skarvada.
Bug (introduced: Postfix 2.5): Postfix ignored the CONNECT macro overrides from a Milter application. Postfix now evaluates the Milter macros for an SMTP CONNECT event after the Postfix-to-Milter connection is negotiated. Problem reported by David Bürgin.
Bug (introduced: Postfix 3.0): sanitize (remote) server responses before storing them in the verify database, to avoid Postfix warnings about malformed UTF8. Found during code maintenance.
Fixed in Postfix 3.1, 3.2, 3.3:
Bug introduced in Postfix 2.8: don't gratuitously enable all postscreen after-220 tests when only one such test is enabled. This made selective tests impossible with 'good' clients. This was already fixed in Postfix 3.4.
You can find the updated Postfix source code at the mirrors listed at http://www.postfix.org/.