Sendmail is out of standard now. No need to exclude here.

custom/qa-test-day.ks

@@ -66,7 +66,6 @@ selinux --permissive
 -realmd
 -rhythmbox
 -sane-backends*
--sendmail
 -shotwell
 -simple-scan
 -system-config-*

fedora-desktop-packages.ks

@@ -14,13 +14,10 @@ nss-mdns
 -system-config-printer
 -im-chooser
 
-# There's been some debate about removing sendmail from @standard, but it's
-# being punted for now.  At least we can fix it in the desktop spin.
 # Similarly, there was also some debate about removing rsyslog from @standard
 # (since much of its functionality is provided by journald now), but it's
 # not going to happen for f20 either, so drop it here for now.
 # https://lists.fedoraproject.org/pipermail/devel/2013-July/186796.html
--sendmail
 -rsyslog
 
 %end

fedora-lxde-packages.ks

@@ -35,8 +35,7 @@ metacity
 #-man-pages-*
 #-words
 
-# use ssmtp instead of sendmail
--sendmail
+# use ssmtp
 ssmtp
 
 # save some space

fedora-soas-packages.ks

@@ -21,7 +21,6 @@
 -rdate
 -rdist
 -icedtea-web
--sendmail
 -firefox
 -glx-utils
 -nmap-ncat