# File lib/em/protocols/smtpserver.rb, line 231
231:       def process_helo domain
232:         if receive_ehlo_domain domain.dup
233:           send_data "250 #{get_server_domain}\r\n"
234:           reset_protocol_state
235:           @state << :ehlo
236:         else
237:           send_data "550 Requested action not taken\r\n"
238:         end
239:       end