SMTP reply codes

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                    SMTP reply codes
   
See
rfc2821
    for the basic specification of SMTP; see also
rfc1123
for
    important additional information.
   
See
rfc1893
    and
rfc2034
    for information about enhanced status codes.
   
Check the RFC
    index for further mail-related RFCs.
   
      
        Reply codes in numerical order
      
      
       
          Code
          Meaning
       
      
      
        200 (nonstandard success response, see rfc876)
        211 System status, or system help reply
        214 Help message
        220  Service ready
        221  Service closing transmission channel
        250 Requested mail action okay, completed
        251 User not local; will forward to
        354 Start mail input; end with .
        421  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 unrecognised
        501 Syntax error in parameters or arguments
        502 Command not implemented
        503 Bad sequence of commands
        504 Command parameter not implemented
        521  does not accept mail (see rfc1846)
        530 Access denied (???a Sendmailism)
        550 Requested action not taken: mailbox unavailable
        551 User not local; please try
        552 Requested mail action aborted: exceeded storage allocation
        553 Requested action not taken: mailbox name not allowed
        554 Transaction failed
      
   
   
      
        Reply codes grouped by command
      
      
       
          Command
          Code
          Description
       
      
      
       
connect
       
220 Service ready
       
421 Service not available, closing transmission channel
       
HELO
       
250Requested mail action okay, completed
       
500Syntax error, command unrecognised
       
501Syntax error in parameters or arguments
       
504Command parameter not implemented
       
521 does not accept mail [rfc1846]
       
421 Service not available, closing transmission channel
       
EHLO
       
250Requested mail action okay, completed
       
550Not implemented
       
500Syntax error, command unrecognised
       
501Syntax error in parameters or arguments
       
504Command parameter not implemented
       
421 Service not available, closing transmission channel
       
MAIL
       
250Requested mail action okay, completed
       
552Requested mail action aborted: exceeded storage allocation
       
451Requested action aborted: local error in processing
       
452Requested action not taken: insufficient system storage
       
500Syntax error, command unrecognised
       
501Syntax error in parameters or arguments
       
421 Service not available, closing transmission channel
       
RCPT
       
250Requested mail action okay, completed
       
251User not local; will forward to
       
550Requested action not taken: mailbox unavailable
       
551User not local; please try
       
552Requested mail action aborted: exceeded storage allocation
       
553Requested action not taken: mailbox name not allowed
       
450Requested mail action not taken: mailbox unavailable
       
451Requested action aborted: local error in processing
       
452Requested action not taken: insufficient system storage
       
500Syntax error, command unrecognised
       
501Syntax error in parameters or arguments
       
503Bad sequence of commands
       
521 does not accept mail [rfc1846]
       
421 Service not available, closing transmission channel
       
DATA
       
354Start mail input; end with .
       
451Requested action aborted: local error in processing
       
554Transaction failed
       
500Syntax error, command unrecognised
       
501Syntax error in parameters or arguments
       
503Bad sequence of commands
       
421 Service not available, closing transmission channel
        received data
       
250Requested mail action okay, completed
       
552Requested mail action aborted: exceeded storage allocation
       
554Transaction failed
       
451Requested action aborted: local error in processing
       
452Requested action not taken: insufficient system storage
       
RSET
       
200(nonstandard success response, see rfc876)
       
250Requested mail action okay, completed
       
500Syntax error, command unrecognised
       
501Syntax error in parameters or arguments
       
504Command parameter not implemented
       
421 Service not available, closing transmission channel
       
SEND
       
250Requested mail action okay, completed
       
552Requested mail action aborted: exceeded storage allocation
       
451Requested action aborted: local error in processing
       
452Requested action not taken: insufficient system storage
       
500Syntax error, command unrecognised
       
501Syntax error in parameters or arguments
       
502Command not implemented
       
421 Service not available, closing transmission channel
       
SOML
       
250Requested mail action okay, completed
       
552Requested mail action aborted: exceeded storage allocation
       
451Requested action aborted: local error in processing
       
452Requested action not taken: insufficient system storage
       
500Syntax error, command unrecognised
       
501Syntax error in parameters or arguments
       
502Command not implemented
       
421 Service not available, closing transmission channel
       
SAML
       
250Requested mail action okay, completed
       
552Requested mail action aborted: exceeded storage allocation
       
451Requested action aborted: local error in processing
       
452Requested action not taken: insufficient system storage
       
500Syntax error, command unrecognised
       
501Syntax error in parameters or arguments
       
502Command not implemented
       
421 Service not available, closing transmission channel
       
VRFY
       
250Requested mail action okay, completed
       
251User not local; will forward to
       
550Requested action not taken: mailbox unavailable
       
551User not local; please try
       
553Requested action not taken: mailbox name not allowed
       
500Syntax error, command unrecognised
       
501Syntax error in parameters or arguments
       
502Command not implemented
       
504Command parameter not implemented
       
421 Service not available, closing transmission channel
       
EXPN
       
250Requested mail action okay, completed
       
550Requested action not taken: mailbox unavailable
       
500Syntax error, command unrecognised
       
501Syntax error in parameters or arguments
       
502Command not implemented
       
504Command parameter not implemented
       
421 Service not available, closing transmission channel
       
HELP
       
211System status, or system help reply
       
214Help message
       
500Syntax error, command unrecognised
       
501Syntax error in parameters or arguments
       
502Command not implemented
       
504Command parameter not implemented
       
421 Service not available, closing transmission channel
       
NOOP
       
200(nonstandard success response, see rfc876)
       
250Requested mail action okay, completed
       
500Syntax error, command unrecognised
       
421 Service not available, closing transmission channel
       
QUIT
       
221 Service closing transmission channel
       
500Syntax error, command unrecognised
       
TURN
       
250Requested mail action okay, completed
       
502Command not implemented
       
500Syntax error, command unrecognised
       
503Bad sequence of commands
      
   
   

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