One of my servers is complaining with this error now that I have updated to CentOS 4.4. I am now running postfix-2.2.10-1.RHEL4.2.mysql_pgsql.c4 from the centosplus repository. I had been running postfix-2.1.5-4.2.RHEL4.mysql.centos4 from the centosplus repository. I also have the following MySQL related packages installed: mysql-devel-5.0.22-1.centos.1 pam_mysql-0.6.0-1 mysqlclient14-4.1.14-4.2.c4.1 php-mysql-5.0.4-5.centos4 perl-DBD-MySQL-2.9004-3.1 mysql-5.0.22-1.centos.1 mysqlclient10-devel-3.23.58-9.2.c4 mysqlclient14-devel-4.1.14-4.2.c4.1 mysql-server-5.0.22-1.centos.1 mysqlclient10-3.23.58-9.2.c4 The MySQL 5 packages are from the centosplus repository. Has anyone else run across this? Any help would be appreciated. Bob