178
4.7.3.
SMTP Server Reply Codes
The Simple Mail Transfer Protocol (SMTP) is independent of the particular transmission subsystem and requires only a
reliable ordered data stream channel. The SMTP design is based on the following model of communication:
• As a result of a user mail request, the sender-SMTP establishes a two-way transmission channel to a receiver-SMTP.
• The receiver-SMTP may be either the ultimate or an intermediate destination.
• The SMTP commands generated by the sender-SMTP are sent to the receiver-SMTP.
• In response to commands, the SMTP replies are sent from the receiver-SMTP to the sender-SMTP.
SMTP Reply Codes
211 System status or system help reply
220 <domain> Service ready
221 <domain> Service closing transmission channel
250 Requested mail action okay, completed
251 User not local; will forward to <forward-path>
354 Start mail input; end with <CRLF>.<CRLF>
421 <domain> Service not available, closing transmission channel
[This may be a reply to any command if the service knows it must shut down]
450 Requested mail action not taken: mailbox unavailable
[i.e., mailbox busy]
451 Requested action aborted: local error in processing
452 Requested action not taken: insufficient system storage
500 Syntax error, command unrecognized
[This may include errors such as command line is too long]
501 Syntax error in parameters or arguments
502 Command not implemented
503 Bad sequence of commands
504 Command parameter not implemented
550 Requested action not taken: mailbox unavailable
[i.e., mailbox not found, no access]
551 User not local; please try <forward-path>
552 Requested mail action aborted: exceeded storage allocation
553 Requested action not taken: mailbox name not allowed
[i.e., mailbox syntax incorrect]
554 Transaction failed
Summary of Contents for Panafax DX-2000
Page 2: ......
Page 27: ...27 9 1 Screw 19 10 Release two Latch Hooks 11 Remove the SNS Assembly 121 9 10 11 ...
Page 49: ...49 2 15 Screw Identification Template ...
Page 57: ...57 3 7 3 Option Cassette Circuit 555 748 728 744 928 953 730 731 731 952 944 930 931 931 ...
Page 58: ...58 3 7 4 LAN Control Circuit 522 CN50 1102 1104 1101 N C N C RD N C N C RD TD TD ...
Page 59: ...59 3 7 5 Page Description Language Printer Interface Kit ...