https://bugzilla.redhat.com/show_bug.cgi?id=1320583
--- Comment #8 from Fedora Update System updates@fedoraproject.org --- php-swiftmailer-5.4.1-1.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-e25a353474