A vulnerability has been found and corrected in postfix: The SMTP server in Postfix before 2.5.13, 2.6.x before 2.6.10, 2.7.x before 2.7.4, and 2.8.x before 2.8.3, when certain Cyrus SASL authentication methods are enabled, does not create a new server handle after client authentication fails, which allows remote attackers to cause a denial of service or possibly execute arbitrary code via an invalid AUTH command with one method followed by an AUTH command with a different method . Packages for 2009.0 are provided as of the Extended Maintenance Program