reduce to experimental because it has problems

sendmail/sendmail.spec

@@ -32,7 +32,7 @@ Summary:      Mail Transfer Agent
 URL:          http://www.sendmail.org/
 Vendor:       Eric Allman
 Packager:     The OpenPKG Project
-Distribution: OpenPKG [REL]
+Distribution: OpenPKG [EXP]
 Group:        Mail
 License:      BSD
 Version:      %{V_sendmail}