I-D ACTION:draft-lindberg-anti-spam-mta-08.txt
Internet-Drafts@ietf.org Thu, 07 January 1999 15:45 UTC
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Subject: I-D ACTION:draft-lindberg-anti-spam-mta-08.txt
Date: Thu, 07 Jan 1999 10:13:13 -0500
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A New Internet-Draft is available from the on-line Internet-Drafts directories. Note: This revision reflects comments received during the last call period. Title : Anti-Spam Recommendations for SMTP MTAs Author(s) : G. Lindberg Filename : draft-lindberg-anti-spam-mta-08.txt Pages : 23 Date : 06-Jan-99 This memo gives a number of implementation recommendations for SMTP, [1], MTAs (Mail Transfer Agents, e.g. sendmail, [7]) to make them more capable of reducing the impact of spam(*). The intent is that these recommendations will help clean up the spam situation, if applied on enough SMTP MTAs on the Internet, and that they should be used as guidelines for the various MTA vendors. We are fully aware that this is not the final solution, but if these recommendations were included, and used, on all Internet SMTP MTAs, things would improve considerably and give time to design a more long term solution. The Future Work section suggests some ideas that may be part of such a long term solution. It might, though, very well be the case that the ultimate solution is social, political, or legal, rather than technical in nature. The implementor should be aware of the increased risk of denial of service attacks that several of the proposed methods might lead to. For example, increased number of queries to DNS servers and increased size of logfiles might both lead to overloaded systems and system crashes during an attack. A brief summary of this memo is: o Stop unauthorized mail relaying. o Spammers then have to operate in the open; deal with them. o Design a mail system that can handle spam. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-lindberg-anti-spam-mta-08.txt Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-lindberg-anti-spam-mta-08.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-lindberg-anti-spam-mta-08.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft.
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