[dianyi@localhost ~]$ rpm -qa|grep mysql

mysql-libs-5.1.52-1.el6_0.1.x86_64

[dianyi@localhost ~]$ rpm -e mysql-libs-5.1.52-1.el6_0.1.x86_64

error: Failed dependencies:

        libmysqlclient.so.16()(64bit) is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64

        libmysqlclient.so.16(libmysqlclient_16)(64bit) is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64

        mysql-libs is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64

[dianyi@localhost ~]$ rpm -e postfix-2:2.6.6-2.2.el6_1.x86_64

error: package postfix-2:2.6.6-2.2.el6_1.x86_64 is not installed

解决办法：

rpm -e --nodeps mysql-libs-5.1.52-1.el6_0.1.x86_64