Search results
Results from the WOW.Com Content Network
The Basic Status Codes have been in SMTP from the beginning, with RFC 821 in 1982, but were extended rather extensively, and haphazardly so that by 2003 RFC 3463 rather grumpily noted that: "SMTP suffers some scars from history, most notably the unfortunate damage to the reply code extension mechanism by uncontrolled use.
In computer programming, a usage message or help message is a brief message displayed by a program that utilizes a command-line interface for execution. This message usually consists of the correct command line usage for the program and includes a list of the correct command-line arguments or options acceptable to said program.
MDNs provide a notification of the "disposition" of a message - indicating, for example, whether it is read by a recipient, discarded before being read, etc. However, for privacy reasons , and also for backward compatibility, requests for MDNs are entirely advisory in nature - i.e. recipients are free to ignore such requests.
The server message is used to tell a server that the other end of a new connection is a server. [36] This message is also used to pass server data over the whole network. <hopcount> details how many hops (server connections) away <servername> is. <info> contains addition human-readable information about the server. Defined in RFC 1459.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file
A DSN may be a MIME multipart/report message composed of three parts: a human readable explanation; a machine parsable message/delivery-status, a list of "name: type; value" lines that state several possible fields; and; the original message, or a portion thereof, as an entity of type message/rfc822. The second part of a DSN is also quite readable.
© 2025 Yahoo. All rights reserved.
The MH Message Handling System is a free, open source e-mail client.It is different from almost all other mail reading systems in that, instead of a single program, it is made from several different programs which are designed to work from the command line provided by the shell on Unix-like operating systems. [1]