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Current issue : #34 | Release date : 1991-10-13 | Editor : Dispater

Introduction to Phrack 34	Dispater & Crimson Death
Phrack Loopback	Phrack Staff
Phrack Prophile of The Disk Jockey	The Disk Jockey & Dispater
The AT&T Mail Gateway	Robert Alien
The Complete Guide to Hacking WWIV	Inhuman
Hacking Voice Mail Systems	Night Ranger
An Introduction to MILNET	Brigadier General Swipe
TCP/IP: A Tutorial Part 2 of 2	The Not
Advanced Modem-Oriented BBS Security	Dead Cow & Laughing Gas
PWN/Part01	Dispater
PWN/Part02	Dispater

Title : The AT&T Mail Gateway

Author : Robert Alien

                                ==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:

        [email protected]

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.

        [email protected] (Internet user's address)

        internet!system.domain!username (to a UUCP address)

Example:
        username%[email protected] (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: [email protected]

Example:

        [email protected]

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.
_______________________________________________________________________________