==Phrack Inc.== Volume Three, Issue Thirty-four, File #4 of 11 _______________________ || || || The AT&T Mail Gateway || || || || December 19, 1990 || || || || by Robert Alien || ||_______________________|| The Internet Gateway ~~~~~~~~~~~~~~~~~~~ The Internet Gateway provides Internet e-mail users with a method of communication to AT&T Mail. The Interconnect consists of various private email networks and uses an addressing format better know as Domain Addressing Service (DAS). A domain address consists of a user name, followed by an @ sign and/or % sign and a domain name, which is usually the system name. Example: jdoe@attmail.com Sending Email to Internet Users ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ To send email from the AT&T MailService to the Internet community use the UUCP addressing style. Example: internet!system.domain!username Translates to: internet!gnu.ai.mit.edu!jdoe If you are sending e-mail to an Internet user whose e-mail address may be in the RFC 822 format (user@domain), you must translate the RFC address before sending your message to an Internet recipient. username@system.domain (Internet user's address) internet!system.domain!username (to a UUCP address) Example: username%system2@system.domain (Internet user's address) Translates to: internet!system.domain!system2!username Sending Email From The Internet ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ To send email to the AT&T Mail Service, Internet users can choose either the RFC 822 or UUCP addressing style. The Internet recognizes attmail.com as the domain identifier for AT&T Mail when electronic messages are sent through the gateway. Although many Internet users choose to send e-mail using the RFC 822 addressing style, the UUCP style is also available on many UNIX systems on the Internet, but not every system supports UUCP. Below are examples of both addressing styles: RFC 822 Addressing: username@attmail.com Example: jsmith@attmail.com UUCP Addressing: attmail.com!username Example: attmail.com!jdoe Although email can be sent through the Internet gateway, surcharged services, such as Telex, FAX, COD, U.S. Mail, overnight, urgent mail and messages destined to other ADMDs connected to AT&T Mail are not deliverable. If you are an Internet e-mail user attempting to use a surcharged service and are not registered on AT&T Mail, you will not be able to send your message, and will be automatically notified. Below is a list of surcharged services that are unavailable to Internet users. * FAX * Telex * COD * U.S. Mail * Overnight * Administrative Management Domain (ADMD) Messages Sending Email to Bitnet Users ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ To send email to BITNET users from AT&T Mail, enter: internet!host.bitnet!user Sending Email to UUNET Users ~~~~~~~~~~~~~~~~~~~~~~~~~~~ To send email to UUNET users from AT&T Mail via the Internet Gateway, enter: attmail!internet!uunet!system!user Internet Restrictions ~~~~~~~~~~~~~~~~~~~~ The following commercial restrictions apply to the use of the Internet Gateway. * Users are prohibited to use the Internet to carry traffic between commercial (for profit) electronic messaging systems. * Advertising and soliciting i.e., messages offering goods or services for sale or offers of jobs. * Provision of for-profit service, other than electronic messaging to Internet users, is permitted (e.g., database services) if such service is used for scholarly research purposes and its costs are borne by individual or institutional subscription. _______________________________________________________________________________