RFC 5321

GPTKB entity

Statements (84)
Predicate Object
gptkbp:instanceOf gptkb:Request_for_Comments
gptkbp:author gptkb:John_Klensin
gptkbp:category Standards Track
gptkbp:defines SMTP relay
SMTP 450 Requested mail action not taken: mailbox unavailable
SMTP 553 Requested action not taken: mailbox name not allowed
SMTP 211 System status, or system help reply
SMTP 214 Help message
SMTP 220 greeting
SMTP 221 Service closing transmission channel
SMTP 250 OK
SMTP 250 Requested mail action okay, completed
SMTP 251 User not local; will forward
SMTP 252 Cannot VRFY user
SMTP 354 Start mail input
SMTP 354 Start mail input; end with <CRLF>.<CRLF>
SMTP 421 Service not available
SMTP 451 Local error in processing
SMTP 451 Requested action aborted
SMTP 452 Insufficient system storage
SMTP 500 Syntax error
SMTP 500 Syntax error, command unrecognized
SMTP 501 Syntax error in parameters
SMTP 501 Syntax error in parameters or arguments
SMTP 502 Command not implemented
SMTP 503 Bad sequence of commands
SMTP 504 Command parameter not implemented
SMTP 550 Requested action not taken
SMTP 551 User not local; please try <forward-path>
SMTP 552 Requested mail action aborted
SMTP 553 Requested action not taken
SMTP 554 Transaction failed
SMTP EXPN command
SMTP HELO/EHLO command
SMTP HELP command
SMTP MAIL FROM command
SMTP NOOP command
SMTP QUIT command
SMTP RCPT TO command
SMTP RSET command
SMTP VRFY command
SMTP address formats
SMTP client
SMTP commands
SMTP data command
SMTP delivery semantics
SMTP envelope
SMTP error handling
SMTP extensions
SMTP mail routing
SMTP message format
SMTP reply codes
SMTP server
SMTP session
SMTP transmission procedures
SMTP 552 Requested mail action aborted: exceeded storage allocation
SMTP 550 Requested action not taken: mailbox unavailable
SMTP 451 Requested action aborted: local error in processing
SMTP 452 Requested action not taken: insufficient system storage
SMTP 421 Service not available, closing transmission channel
https://www.w3.org/2000/01/rdf-schema#label RFC 5321
gptkbp:language English
gptkbp:obsoletes gptkb:RFC_2821
RFC 5321 (updated by RFC 7504, RFC 6531, RFC 6854, RFC 5321 errata)
gptkbp:publicationDate October 2008
gptkbp:publishedBy gptkb:Internet_Engineering_Task_Force
gptkbp:replacedBy gptkb:RFC_2821
gptkbp:status gptkb:standard
gptkbp:subject gptkb:Internet_Standards
Email
gptkbp:supportsProtocol SMTP
gptkbp:title gptkb:Simple_Mail_Transfer_Protocol
gptkbp:updated gptkb:RFC_1123
gptkb:RFC_6531
gptkb:RFC_5321_errata
gptkb:RFC_6854
gptkb:RFC_7504
gptkbp:url https://datatracker.ietf.org/doc/html/rfc5321
gptkbp:bfsParent gptkb:Request_for_Comments_(RFC)
gptkb:Simple_Mail_Transfer_Protocol_(SMTP)
gptkb:Request_for_Comments
gptkb:IETF_RFC_Series
gptkb:RFCs_(Request_for_Comments)
gptkbp:bfsLayer 5