[exim] Best OS to run EXIM

Hi,

I currently run exim 4.81 on rhel6 , looking to run latest EXIM 4.87 on
RHEL7, couldn't find compiled RPMs for RHEL7 (no fedora).I don't want to
compile and prefer to get ready compiled RPMs.

Which OS will have RPMs compiled in OS repository (like rhn on rhel)?

Is there appliance that have all EXIM dependency and RPMs installed ?.

Thanks