Out: 220 routeduvel.welmers.net ESMTP - hostname and valid HELO required, UCE
     will be rejected
 In:  EHLO u15178554.onlinehome-server.com
 Out: 250-routeduvel.welmers.net
 Out: 250-PIPELINING
 Out: 250-SIZE 10240000
 Out: 250-VRFY
 Out: 250-ETRN
 Out: 250 8BITMIME
 In:  MAIL FROM:<>
 Out: 250 Ok
 In:  RCPT TO:<admin@welmers.net>
 Out: 451 Server configuration error
 In:  QUIT
 Out: 221 Bye