****
# Try without TLS
client -t3 127.0.0.1 PORT_D
-??? 220
+??? 220 myhost
EHLO xxxx
-??? 250-
-??? 250-
-??? 250-
-??? 250-
-??? 250-
-??? 250
+??? 250-myhost
+??? 250-SIZE
+??? 250-8BITMIME
+??? 250-PIPELINING
+??? 250-AUTH
+??? 250-STARTTLS
+??? 250 HELP
AUTH PLAIN AHVzZXJ4AHNlY3JldA==
??? 535
quit
??? 250-
??? 250-
??? 250-
+??? 250-
??? 250
STARTTLS
??? 220
??? 250-
??? 250-
??? 250-
+??? 250-
??? 250
AUTH PLAIN AHVzZXJ4AHNlY3JldA==
??? 535
??? 250-
??? 250-
??? 250-
+??? 250-
??? 250
STARTTLS
??? 220
??? 250-
??? 250-
??? 250-
+??? 250-
??? 250
AUTH PLAIN AHVzZXJ4AHNlY3JldA==
??? 535