+>>> ehlo rhu.barb
+??? 250-
+<<< 250-myhost.test.ex Hello rhu.barb [ip4.ip4.ip4.ip4]
+??? 250-
+<<< 250-SIZE 52428800
+??? 250-
+<<< 250-LIMITS MAILMAX=1000 RCPTMAX=50000
+??? 250-
+<<< 250-8BITMIME
+??? 250-
+<<< 250-PIPELINING
+??? 250
+<<< 250 HELP