environment = "EXTENSION=${substr_1:${local_part_suffix}}:\
EXT=${substr_1:${local_part_suffix}}:\
LOCAL=${local_part}${local_part_suffix}:\
environment = "EXTENSION=${substr_1:${local_part_suffix}}:\
EXT=${substr_1:${local_part_suffix}}:\
LOCAL=${local_part}${local_part_suffix}:\