in server:mail exim got updated to the current, 4.74 release.
Nevertheless we see rpm files in the repository of version 4.6.9 and 4.71.
Does this happen due other OBS repositories linking to this particular version?
Well, the same applies to network:samba:STABLE and TESTING.
In STABLE we have 3.5.6 and 3.5.4 and in TESTING 3.6.0pre1 and 3.5.4rc ... This applies to the search at http://software.opensuse.org/ only. As soon as you check http://download.opensuse.org/repositories/ you see for Samba all is correct.
While you for exim really find exim-4.69-70.16.1, exim-4.69-72.7.1, exim-4.71-4.4.1, and exim-4.74-17.1 packages at download.o.o.