I have noticed this in the cron:

# /usr/sbin/foreman-rake reports:summarize
rake aborted!
getaddrinfo: Name or service not known

Tasks: TOP => reports:summarize
(See full trace by running task with --trace)
# echo $?
1

And with trace option:

# /usr/sbin/foreman-rake --trace reports:summarize
** Invoke reports:summarize (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute reports:summarize
rake aborted!
getaddrinfo: Name or service not known
/opt/rh/ruby193/root/usr/share/ruby/net/smtp.rb:540:in `initialize'
/opt/rh/ruby193/root/usr/share/ruby/net/smtp.rb:540:in `open'
/opt/rh/ruby193/root/usr/share/ruby/net/smtp.rb:540:in `tcp_socket'
/opt/rh/ruby193/root/usr/share/ruby/net/smtp.rb:549:in `block in do_start'
/opt/rh/ruby193/root/usr/share/ruby/timeout.rb:69:in `timeout'
/opt/rh/ruby193/root/usr/share/ruby/timeout.rb:100:in `timeout'
/opt/rh/ruby193/root/usr/share/ruby/net/smtp.rb:549:in `do_start'
/opt/rh/ruby193/root/usr/share/ruby/net/smtp.rb:519:in `start'
/opt/rh/ruby193/root/usr/share/gems/gems/mail-2.4.4/lib/mail/network/delivery_methods/smtp.rb:144:in `deliver!'
/opt/rh/ruby193/root/usr/share/gems/gems/mail-2.4.4/lib/mail/message.rb:2034:in `do_delivery'
/opt/rh/ruby193/root/usr/share/gems/gems/mail-2.4.4/lib/mail/message.rb:229:in `block in deliver'
/opt/rh/ruby193/root/usr/share/gems/gems/actionmailer-3.2.8/lib/action_mailer/base.rb:415:in `block in deliver_mail'
/opt/rh/ruby193/root/usr/share/gems/gems/activesupport-3.2.8/lib/active_support/notifications.rb:123:in `block in instrument'
/opt/rh/ruby193/root/usr/share/gems/gems/activesupport-3.2.8/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/opt/rh/ruby193/root/usr/share/gems/gems/activesupport-3.2.8/lib/active_support/notifications.rb:123:in `instrument'
/opt/rh/ruby193/root/usr/share/gems/gems/actionmailer-3.2.8/lib/action_mailer/base.rb:413:in `deliver_mail'
/opt/rh/ruby193/root/usr/share/gems/gems/mail-2.4.4/lib/mail/message.rb:229:in `deliver'
/usr/share/foreman/lib/tasks/reports.rake:80:in `block (2 levels) in <top (required)>'
/opt/rh/ruby193/root/usr/share/ruby/rake/task.rb:205:in `call'
/opt/rh/ruby193/root/usr/share/ruby/rake/task.rb:205:in `block in execute'
/opt/rh/ruby193/root/usr/share/ruby/rake/task.rb:200:in `each'
/opt/rh/ruby193/root/usr/share/ruby/rake/task.rb:200:in `execute'
/opt/rh/ruby193/root/usr/share/ruby/rake/task.rb:158:in `block in invoke_with_call_chain'
/opt/rh/ruby193/root/usr/share/ruby/monitor.rb:211:in `mon_synchronize'
/opt/rh/ruby193/root/usr/share/ruby/rake/task.rb:151:in `invoke_with_call_chain'
/opt/rh/ruby193/root/usr/share/ruby/rake/task.rb:144:in `invoke'
/opt/rh/ruby193/root/usr/share/ruby/rake/application.rb:116:in `invoke_task'
/opt/rh/ruby193/root/usr/share/ruby/rake/application.rb:94:in `block (2 levels) in top_level'
/opt/rh/ruby193/root/usr/share/ruby/rake/application.rb:94:in `each'
/opt/rh/ruby193/root/usr/share/ruby/rake/application.rb:94:in `block in top_level'
/opt/rh/ruby193/root/usr/share/ruby/rake/application.rb:133:in `standard_exception_handling'
/opt/rh/ruby193/root/usr/share/ruby/rake/application.rb:88:in `top_level'
/opt/rh/ruby193/root/usr/share/ruby/rake/application.rb:66:in `block in run'
/opt/rh/ruby193/root/usr/share/ruby/rake/application.rb:133:in `standard_exception_handling'
/opt/rh/ruby193/root/usr/share/ruby/rake/application.rb:63:in `run'
/opt/rh/ruby193/root/usr/bin/rake:32:in `<main>'
Tasks: TOP => reports:summarize

I have these packages:

# rpm -qa | grep -e katello -e foreman | sort
foreman-1.5.0.10-1.el6sat.noarch
foreman-compute-1.5.0.10-1.el6sat.noarch
foreman-libvirt-1.5.0.10-1.el6sat.noarch
foreman-ovirt-1.5.0.10-1.el6sat.noarch
foreman-postgresql-1.5.0.10-1.el6sat.noarch
foreman-proxy-1.5.3-1.el6sat.noarch
foreman-selinux-1.5.0-0.develop.el6sat.noarch
foreman-vmware-1.5.0.10-1.el6sat.noarch
katello-1.5.0-18.el6sat.noarch
katello-apache-1.0-1.noarch
katello-ca-1.0-1.noarch
katello-certs-tools-1.5.5-1.el6sat.noarch
katello-installer-0.0.30-1.el6sat.noarch
pulp-katello-plugins-0.2-1.el6sat.noarch
ruby193-rubygem-foreman-tasks-0.4.0-5.el6sat.noarch
ruby193-rubygem-katello-1.5.0-23.el6sat.noarch
rubygem-foreman_api-0.1.11-4.el6sat.noarch
rubygem-hammer_cli_foreman-0.0.18-8.el6sat.noarch
rubygem-hammer_cli_foreman_tasks-0.0.1-4.el6sat.noarch
rubygem-hammer_cli_katello-0.0.3-6.el6sat.noarch
rubygem-katello_api-0.0.8-2.el6sat.noarch
something-foreman-client-1.0-1.noarch
something-foreman-proxy-1.0-1.noarch