added hostname config back into setup_mail.rb initializer
added hostname config back into setup_mail.rb initializer

YaleOutdoors/reservations,Amalanag/reservations,YaleSTC/reservations,Amalanag/reservations,YaleOutdoors/reservations,YaleSTC/reservations,Amalanag/reservations,YaleOutdoors/reservations,YaleSTC/reservations