smtplib

Status Codes

StatusSystemStatus            = 211 // 211 System status, or system help reply
StatusSystemHelp              = 214 // 214 Help message
StatusServiceReady            = 220 // 220 <domain> Service ready
StatusServiceClosing          = 221 // 221 <domain> Service closing transmission channel
StatusAuthenticationSuccess   = 235 // 235 Authentication succeeded
StatusActionCompleted         = 250 // 250 Requested mail action okay, completed
StatusUserNotLocalWillForward = 251 // 251 User not local; will forward to <forward-path>
StatusCannotVerifyUser        = 252 // 252 Cannot verify the user, but it will try to deliver the message anyway

StatusStartMailInput = 354 // 354 Start mail input; end with <CRLF>.<CRLF>

StatusServiceNotAvailable              = 421 // 421 <domain> Service not available, closing transmission channel
StatusPasswordTransitionNeeded         = 432 // 432 A password transition is needed
StatusActionNotTakenMailboxUnavailable = 450 // 450 Requested mail action not taken: mailbox unavailable
StatusActionAbortedLocalError          = 451 // 451 Requested action aborted: local error in processing
StatusActionNotTakenInsufficentStorage = 452 // 452 Requested action not taken: insufficient system storage
StatusAuthenticationTemporaryFailured  = 454 //	454 Temporary authentication failure
StatusUnableAccommodateParameters      = 455 //	455 Server unable to accommodate parameters

StatusSyntaxErrorCommand                   = 500 // 500 Syntax error, command unrecognized
StatusSyntaxErrorParameters                = 501 // 501 Syntax error in parameters or arguments
StatusCommandNotImplemented                = 502 // 502 Command not implemented
StatusCommandBadSequence                   = 503 // 503 Bad sequence of commands
StatusCommandParameterNotImplemented       = 504 // 504 Command parameter not implemented
StatusServerDoesNotAcceptMail              = 521 // 521 Server does not accept mail
StatusEncryptionNeeded                     = 523 // 523 Encryption Needed
StatusAuthenticationRequired               = 530 // 530 Authentication required
StatusAuthenticationInvalid                = 535 // 535 Authentication credentials invalid
StatusActionNotTakenMailboxInaccessible    = 550 // 550 Requested action not taken: mailbox unavailable
StatusUserNotLocal                         = 551 // 551 User not local; please try <forward-path>
StatusActionAbortedExceedStorageAllocation = 552 // 552 Requested mail action aborted: exceeded storage allocation
StatusActionNotTakenMailboxNameNotAllowed  = 553 // 553 Requested action not taken: mailbox name not allowed
StatusTransactionFailed                    = 554 // 554 Transaction failed
StatusMessageTooBig                        = 554 // 554 Message too big for system
StatusDomainDoesNotAcceptMail              = 556 // 556 Domain does not accept mail