[
 {
  "code": 211,
  "bedeutung": "System status, or system help reply"
 },
 {
  "code": 214,
  "bedeutung": "Help message Information on how to use the receiver or the meaning of a particular non-standard command; this reply is useful only to the human user"
 },
 {
  "code": 220,
  "bedeutung": "domain Service ready"
 },
 {
  "code": 221,
  "bedeutung": "domain Service closing transmission channel"
 },
 {
  "code": 250,
  "bedeutung": "Requested mail action okay, completed"
 },
 {
  "code": 251,
  "bedeutung": "User not local; will forward to forward-path"
 },
 {
  "code": 354,
  "bedeutung": "Start mail input; end with CRLF CRLF"
 },
 {
  "code": 421,
  "bedeutung": "domain Service not available, closing transmission channel This may be a reply to any command if the service knows it must shut down"
 },
 {
  "code": 450,
  "bedeutung": "Requested mail action not taken: mailbox unavailable [E.g., mailbox busy"
 },
 {
  "code": 451,
  "bedeutung": "Requested action aborted: local error in processing"
 },
 {
  "code": 452,
  "bedeutung": "Requested action not taken: insufficient system storage"
 },
 {
  "code": 500,
  "bedeutung": "Syntax error, command unrecognized [This may include errors such as command line too long"
 },
 {
  "code": 501,
  "bedeutung": "Syntax error in parameters or arguments"
 },
 {
  "code": 502,
  "bedeutung": "Command not implemented"
 },
 {
  "code": 503,
  "bedeutung": "Bad sequence of commands"
 },
 {
  "code": 504,
  "bedeutung": "Command parameter not implemented"
 },
 {
  "code": 550,
  "bedeutung": "Requested action not taken: mailbox unavailable [E.g., mailbox not found, no access"
 },
 {
  "code": 551,
  "bedeutung": "User not local; please try forward-path"
 },
 {
  "code": 552,
  "bedeutung": "Requested mail action aborted: exceeded storage allocation"
 },
 {
  "code": 553,
  "bedeutung": "Requested action not taken: mailbox name not allowed [E.g., mailbox syntax incorrect"
 },
 {
  "code": 554,
  "bedeutung": "Transaction failed"
 }
]