[root@serverhost ~]# yum install sendmail sendmail-cf
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.coreix.net
 * epel: mirrors.coreix.net
 * extras: mirror.freethought-internet.co.uk
 * nux-dextop: mirror.li.nux.ro
 * updates: mirrors.coreix.net
Resolving Dependencies
--> Running transaction check
---> Package sendmail.x86_64 0:8.14.7-4.el7 will be installed
---> Package sendmail-cf.noarch 0:8.14.7-4.el7 will be installed
Removing sendmail.x86_64 0:8.14.7-4.el7 - u due to obsoletes from installed plesk-mail-pc-driver-12.5.30-cos7.build1205150826.19.x86_64
Removing sendmail-cf.noarch 0:8.14.7-4.el7 - u due to obsoletes from installed plesk-mail-pc-driver-12.5.30-cos7.build1205150826.19.x86_64
--> Restarting Dependency Resolution with new changes.
--> Running transaction check
---> Package sendmail.x86_64 0:8.14.7-4.el7 will be installed
---> Package sendmail-cf.noarch 0:8.14.7-4.el7 will be installed
--> Finished Dependency Resolution
[root@serverhost ~]#