SMTP reply code messages
This topic contains SMTP reply code messages.
- 451: Local error in processing
- 451: Pacing problem detected by server
- 500: Command Line too long
- 500: Unknown command, command
- 501: Syntax Error. <CR> and <LF> not permitted in Quoted Text
- 501: Syntax Error. message
- 501: Syntax Error. address expected
- 501: Syntax Error. address must be in range 0..255
- 501: Syntax Error. address too long
- 501: Syntax Error. ‘.’ expected
- 501: Syntax Error. ‘[’ expected in PathName
- 501: Syntax Error. ‘:’ Expected in Path Name
- 501: Syntax Error. ‘@’ expected
- 501: Syntax Error. ‘@’ Expected in Source Route
- 501: Syntax Error. ‘”’ expected
- 501: Syntax Error. Domain name cannot end with ‘-’
- 501: Syntax Error. Domain name missing
- 501: Syntax Error. Domain name too long
- 501: Syntax Error. Incomplete Address
- 501: Syntax Error. Incomplete Address
- 501: Syntax Error. Invalid LocalPart of Address
- 501: Syntax Error. Invalid Path Specification
- 501: Syntax Error. Missing Domain Name
- 501: Syntax Error. Missing host name, ‘@’ expected
- 501: Syntax Error. Missing User name
- 501: Syntax Error. Must use MAIL FROM:
- 501: Syntax Error. Must use RCPT TO:
- 501: Syntax Error. Must use VERB ON or VERB OFF
- 501: Syntax Error. Need args after MAIL command
- 501: Syntax Error. Need args after RCPT command
- 501: Syntax Error. Need args after command command
- 501: Syntax Error. Need args after TICK command
- 501: Syntax Error. Need args after VERB command
- 501: Syntax Error. No Args after command command
- 501: Syntax Error. Null Recipient Invalid
- 501: Syntax Error. Number Expected
- 501: Syntax Error. Only ListId or Userid allowed as argument to this command
- 501: Syntax Error. Path too long
- 501: Syntax Error. Quoted text is a null string
- 501: Syntax Error. Special chars only with Escape Char
- 501: Syntax Error. Start Domain with a…z, A…Z, or 0…9
- 501: Syntax Error. Start Path name with ‘<’
- 501: Syntax Error. Unexpected end of Domain Name
- 501: Syntax Error. Unexpected Token result
- 501: Syntax Error. Unterminated Quoted String
- 502: Command smtp_command not implemented
- 503: HELO must be first command in session
- 503: No Recipients specified
- 503: No Sender specified
- 503: Sender already specified
- 503: Sender must be specified before recipients
- 504: HELP topic unknown
- 522: Too many recipients
- 550: Cannot accept mail for this host; MX records will cause loop.
- 550: Cannot accept mail for this host; Next MX site not defined.
- 550: Cannot accept mail IPMAILERNAME will cause loop.
- 550: Host host Unknown
- 550: Mail forwarding not supported
- 550: Mailing list mailinglist Nonexistent 550 MailBox mailbox Nonexistent
- 550: Service denied due to user supplied exit.
- 550: Source routing not permitted in gateway
- 550: Spool File Origin: userid@nodeid does not match Sender’s Address: path
- 550: Unable to find A records for any MX sites for the recipient host.
- 550: Unable to resolve recipient address for days days.
- 550: User name Unknown
- 550: User userid@nodeid on Restricted List
- 550: User RSCSUser@RSCSHost is not a registered gateway user
- 552: Mail file too large
- 552: Too many recipients
Parent topic: TCP⁄IP codes