Yum check error

Hi,

Today i run command
#yum check and it say error
What need i do now
[root@sv custombuild]# yum check
Loaded plugins: fastestmirror
MySQL-client-5.5.27-1.linux2.6.x86_64 is obsoleted by MySQL-client-5.5.27-1.linux2.6.x86_64
MySQL-devel-5.5.27-1.linux2.6.x86_64 is obsoleted by MySQL-devel-5.5.27-1.linux2.6.x86_64
MySQL-server-5.5.27-1.linux2.6.x86_64 is obsoleted by MySQL-server-5.5.27-1.linux2.6.x86_64
MySQL-shared-5.5.27-1.linux2.6.x86_64 is obsoleted by MySQL-shared-5.5.27-1.linux2.6.x86_64
sendmail-cf-8.14.4-8.el6.noarch has missing requires of sendmail = ('0', '8.14.4', '8.el6')
Error: check all

Thanks

Error : Check all

Click to expand...

It's not looks like an error :|

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Check this topic: How to remove these yum notices? it same as yours.