line.gsub!(/^CGIMAP_MEMCACHE=.*;/, "CGIMAP_MEMCACHE=rails1,rails2,rails3;")
line.gsub!(/^CGIMAP_RATELIMIT=.*;/, "CGIMAP_RATELIMIT=204800;")
line.gsub!(/^CGIMAP_MEMCACHE=.*;/, "CGIMAP_MEMCACHE=rails1,rails2,rails3;")
line.gsub!(/^CGIMAP_RATELIMIT=.*;/, "CGIMAP_RATELIMIT=204800;")