DL06 Micro PLC User Manual, 3rd Edition, Rev. E
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Chapter 5: Standard RLL Instructions
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SMTP Protocol Errors - SMTP (100-999)
Error
Description
1xx
Informational replies
2xx
Success replies
200
(Non-standard success response)
211
System status or system help reply
214
Help message
220
<domain> Service ready. Ready to start TLS
221
<domain> Service closing transmission channel
250
Ok, queuing for node <node> started. Requested mail action okay, completed
251
Ok, no messages waiting for node <node>. User not local; will forward to <forward-path>
252
OK, pending messages for node <node> started. Cannot VRFY user (e.g., info is not local), but
will take message for this user and attempt delivery.
253
OK, messages pending messages for node <node> started
3xx
(re) direction replies
354
Start mail input; end with <CRLF>.<CRLF>
355
Octet-offset is the transaction offset.
4xx
client/request error replies
421
<domain> Service not available, closing transmission channel
432
A password transition is needed
450
Requested mail action not taken: mailbox unavailable. ATRN request refused.
451
Requested action aborted; local error in processing. Unable to process ATRN request now.
452
Requested action not taken: insufficient system storage
453
You have no mail
454
TLS is not available due to temporary reason. Encryption required for requested authentication
mechanism.
458
Unable to queue messages for node <node>
459
Node <node> not allowed: <reason>
5xx
Server/process error replies
500
Syntax error, command unrecognized. Syntax error.
501
Syntax error in parameters or arguments
502
Command not implemented
503
Bad sequence of commands
504
Command parameter not implemented
521
<domain> does not accept mail
530
Access denied. Must issue a STARTTLS command first. Encryption required for requested
authentication mechanism.
ECEMAIL Decimal Status Codes
SMTP Protocol Errors - SMTP (100-999)