E-Mail Antwort-Codes

POP response codes

-Those that return no data = (USER, PASS, DELE, QUIT) -Those that return one line of data = (STAT) -Those that return multiple lines of data = (LIST, RETR)

SMTP Reply Codes

221 - System Status, or system help reply
214 - Help Message
220 - <domain> Service Ready
221 - <domain> Service closing transmission channel
250 - Requested mail action okay, completed
251 - User not local; end with <CRLF>.<CRLF>
421 - <domain> Service not available, closing transmission channel
450 - Requested mail action not taken: mailbox unavailable

451 - Requested action aborted: local error in processing
452 - Requested action not taken: insufficient system storage
500 - Syntax error, command unrecognized
501 - Syntax error in parameters or arguments
502 - Command not implemented
503 - Bad sequence of commands
504 - Command parameter not implemented
550 - Requested action not taken: mailbox unavailable
551 - User not local; please try <forward path>
552 - Requested mail action aborted: exceeded storage allocated
553 - Requested action not taken: mailbox name not allowed
554 - Transaction failed

Primary Reply Categories - First Digit of Reply Code

Value Reply Type Description

1 Positive Preliminary Command held pending confirmation
2 Positive Completion Command successfully completed
3 Positive Intermediate Command held awaiting further information
4 Transient Negative Command failed due to temporary condition
5 Permanent Negative Command failed