221 – The domain service is closing the transmission channel (also called SMTP Error 2.2.1)
by admin on Jan.26, 2010, under Mail
SMTP Error 221 : The server is ending the mail session – it is closing the conversation with the ISP as it has no more mail to send in this sending session. SMTP Status 221 is often misconstrued as an error condition, when it is in fact nothing of the sort. The mail server is simply telling you that it has processed everything it was given in this particular session, and it is now going back into waiting mode. Because SMTP status 221 is often misinterpreted, with some mail servers the Network Administrators have changed the default text of SMTP Reply 221 to something more meaningful and less alarming. For example, a typical SMTP reply 221 might say “221 Goodbye” or “221 Closing connection”, or the most irritating one we’ve seen “221 Bye”, Arrrgghh – can you blame anyone for thinking there might be a problem ? Of course not ! So some Network Administrators are these days being quite imaginative by changing the default text of SMTP reply 221 to more user friendly messages like : “221 Thank you for your business” (I love that one!), or “221 All messages processed successfully in this session, SMTP connection is closing”.
Related posts:
- 442 – The connection was dropped during transmission. (also called SMTP Error 4.4.2) SMTP Error 442 : Your server started delivering the message...
- 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...
- 421 – <Server name> Service not available – the sending email program should try again later (also called SMTP Error 4.2.1) SMTP Error 421 : The Mail transfer service is unavailable...
- 214 – Help Reply message (also called SMTP Error 2.1.4) SMTP Error 214 : SMTP status 214 is usually in...
- 101 – Cannot open connection (also called SMTP Error 1.0.1) SMTP Error 101 : Typically your SMTP server or email...
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