Package install from Red Hat Satellite 6 includes more packages than actual dependencies

Issue

• When scheduling package install from satellite it includes more packages than the actual dependencies.
  Hosts -> Content Hosts -> Select Host -> Packages -> Package Actions -> Select "Package Install" -> Enter "dovecot" -> Perform

Actual results:
Output:

1:dovecot-mysql-2.0.9-19.el6_7.2.x86_64
1:dovecot-pgsql-2.0.9-19.el6_7.2.x86_64
1:dovecot-2.0.9-19.el6_7.2.x86_64
1:dovecot-devel-2.0.9-19.el6_7.2.x86_64
1:dovecot-pigeonhole-2.0.9-19.el6_7.2.x86_64
postgresql-libs-8.4.20-5.el6_7.x86_64

Expected results:
Only the dovecot package should have been installed.