fixed to apply 'op_mail_envelope_from' config for sendmail transport (refs #3358)
fixed to apply 'op_mail_envelope_from' config for sendmail transport (refs #3358)

ShinichiU/OpenPNE3,C-nakajima/OpenPNE3,isaosano/OpenPNE3,isaosano/OpenPNE3,nishizoe/OpenPNE3,C-nakajima/OpenPNE3,ShinichiU/OpenPNE3,nishizoe/OpenPNE3,isaosano/OpenPNE3,ShinichiU/OpenPNE3,isaosano/OpenPNE3,ShinichiU/OpenPNE3,C-nakajima/OpenPNE3,C-nakajima/OpenPNE3