mock -r epel-7-x86_64 /tmp/perl-Email-Reply-1.203-1.fc22.src.rpm will run without any problems.
I've requested an EPEL-7 branch via pkgdb; hopefully spot will approve it soon.
perl-Email-Reply-1.203-2.el7 has been submitted as an update for Fedora EPEL 7. https://admin.fedoraproject.org/updates/perl-Email-Reply-1.203-2.el7
perl-Email-Reply-1.203-2.el7 has been pushed to the Fedora EPEL 7 testing repository.
perl-Email-Reply-1.203-2.el7 has been pushed to the Fedora EPEL 7 stable repository.
Thanks