bang path การใช้

• Usenet traffic was originally transmitted over the UUCP protocol using bang paths.
• At the time, it was a complement to bang paths " it used as message routing headers.
• At first, all Usenet and UUCP messages used " bang paths ", such as unc ! research ! ucbvax ! mark, as email addresses.
• Early e-mail systems also used the exclamation mark as a separator character between hostnames for routing information, usually referred to as " bang path " notation.
• To make things worse sometimes the " new " ( 1982 ) style of addresses was mixed with old UUCP " bang paths " in constructs like&
• Because the system was designed only with uucp in mind, posters were identified by their uucp " bang path " addresses, a feature that persists ( albeit more for identifying servers than users ) in modern Usenet.
• :Perhaps UUCP mail, which used " bang paths " separated by "'! "'and written in a range of orders including the reverse of the RFC 822 format .-- Talk 09 : 49, 26 April 2013 ( UTC)
• In the Simple Mail Transfer Protocol ( SMTP ) this " reverse path " is also known as MAIL FROM, but paths were also used before and outside of SMTP, e . g . as " bang paths " in UUCP and Usenet ( NetNews ).
• Earlier forms of email addresses on other networks than the Internet included other notations, such as that required by X . 400, and the UUCP " bang path " notation, in which the address was given in the form of a sequence of computers through which the message should be relayed.
• Bang-like paths are still in use within the Usenet network, though not for routing; they are used to record the nodes through which a message has passed, rather than to direct where it will go next . " Bang path " is also used as an expression for any explicitly specified routing path between network hosts.
• In general, like other older e-mail address formats, bang paths have now been superseded by the " @ notation ", even by sites still using UUCP . A UUCP-only site can register a DNS domain name, and have the DNS server that handles that domain provide MX records that cause Internet mail to that site to be delivered to a UUCP host on the Internet that can then deliver the mail to the UUCP site.
• As UUCP hosts were not always uniquely named, and there was no official global table listing them, although the UUCP Mapping Project was an informal effort to create such a list, actual access to one ( e . g ., for routing e-mail to it ) required the use of a full bang path, which did not follow domain-name-style syntax, unless the particular software being used had been programmed to recognize particular hostnames in a domain style and route to them.