+++++++++++++++++++++++++++
  R:userx@x.y -44 13377 SMTP error from remote mail server after RCPT TO:<userx@x.y>: host 127.0.0.1 [127.0.0.1]: 452 temporary error
first failed = time last try = time2 next try = time2 + 0 *
  T:127.0.0.1:127.0.0.1:1224 dd 65 Connection refused
first failed = time last try = time2 next try = time2 + 900

******** SERVER ********
Listening on port 1224 ... 
Connection request from [127.0.0.1]
220 Server ready
EHLO myhost.test.ex
250-server id
250 OK
MAIL FROM:<CALLER@myhost.test.ex>
250 OK
RCPT TO:<userx@x.y>
452 temporary error
QUIT
250 OK
End of script