Enhanced Smtp Error Codes
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2003 Category: Standards Track Enhanced Mail System Status Codes smtp enhanced status codes Status of this Memo This document specifies an
Smtp Server Error Codes
Internet standards track protocol for the Internet community, and requests discussion and
Smtp Error Codes 554
suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the
Smtp Error Codes And Acknowledgements
standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (2003). All Rights Reserved. Abstract This document defines a set of extended status codes for use within the mail system smtp error codes wikipedia for delivery status reports, tracking, and improved diagnostics. In combination with other information provided in the Delivery Status Notification (DSN) delivery report, these codes facilitate media and language independent rendering of message delivery status. Table of Contents 1. Overview ......................................................2 2. Status Code Structure .........................................3 3. Enumerated Status Codes .......................................5 3.1 Other or Undefined Status ...................................6 3.2 Address Status ..............................................6 3.3 Mailbox Status ..............................................7 3.4 Mail system status ..........................................8 3.5 Network and Routing Status ..................................9 3.6 Mail Delivery Protocol Status ..............................10 3.7 Message Content or Message Media Status ....................11 3.8 Security or Policy Status ..................................12 4. References ...................................................13 5. Security Considerations ......................................13 Appendix A - Collected Status Codes ..........................14 Appendix B - Changes from RFC1893 ...............
reply codesSometimes your SMTP server may return a particular error message. The problem is that it will generally be very cryptic, smtp error codes rfc like "550 Requested action not taken: mailbox unavailable" or "421 Try again smtp error codes 550 later". What does these numbers mean?First of all: not any reply code is an error. Sometimes it's mimecast smtp error codes just a response containing a detail about the server or an answer to a command. Secondly: any code consist of three digits, and each conveys a particular information. https://tools.ietf.org/html/rfc3463 The first one defines whether the server has accepted the command, fulfilled an action, run into a temporary issue, encountered an error etc; the second and the third one refine the description further, stating if there's been a syntactic problem, or a connection trouble etc.Unfortunately, different servers sometimes use these codes in a different way, making http://www.serversmtp.com/en/smtp-error the whole thing even more complicated... Anyhow, the most critical series of error messages is the 5xx one, and especially the ones from 550 to 559. In particular, you will probably get a lot of 550 SMTP error codes – that is, a problem that concerns the recipient's email address.Finally, remember that it's much easier to deal with these error codes if you choose to rely on a professional SMTP server that will help you solve any issue. turboSMTP, for instance, comes with a 24/7 customer support: you can try it free and forget once for all these issues.And here's a list of the main SMTP error or reply messages, with an explanation and a tip about what to do. CODEMEANINGHOW TO SOLVE IT / WHAT TO DO101The server is unable to connect.Try to change the server's name (maybe it was spelt incorrectly) or the connection port.111Connection refused or inability to open an SMTP stream.This error normally refers to a connection issue with the remote SMTP server, depend
Reply codes in numerical order Code Meaning 200 (nonstandard success response, see rfc876) 211 System http://www.greenend.org.uk/rjk/tech/smtpreplies.html status, or system help reply 214 Help message 220