251 – User not local will forward (also called SMTP Error 2.5.1)
by admin on Jan.26, 2010, under Mail
SMTP Status 251 : The email account is not local to the ISP server but the ISP server will accept the email and will forward it (the server will RELAY your message, this is the most common action for ISP Mail servers – the recipient will see your ISP in the mail header as one of the first hops on the way to the recipient’s email system). SMTP Error 251 is therefore more of an informational message for technicians tracking how a message reached its destination.
Related posts:
- 451 – Requested action aborted – Local error in processing. (also called SMTP Error 4.5.1) SMTP Error 451 : The action has been aborted by...
- 450 – Requested action not taken – The mailbox was unavailable at the remote end. A secondary SMTP error code may follow “450” to refine the reason for the failure to transmit the message, e.g. “SMTP Error 450 (also called SMTP Error 4.5.0) SMTP Error 450 : The server could not access the...
- 252 – Cannot VRFY (verify) the user – the server will accept the message and attempt to deliver it (also called SMTP Error 2.5.2) SMTP Status 252 : The user account appears to be...
- 220 – <Server Name> service is running (also called SMTP Error 2.2.0) SMTP Status 220 : This is normally the first message...
- 449 – Routing error (also called SMTP Error 4.4.9) SMTP Error 449 : This is a Microsoft Exchange Server...
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