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| | Sender Policy Framework - Wikipedia, the free encyclopedia |
 | | In computing, Sender Policy Framework (SPF) is an extension to the Simple Mail Transfer Protocol (SMTP). | | | SPF does not validate that a given e-mail actually comes from the claimed user, because it operates at the network level. | | | As soon as SPF implementations detect syntax errors in a sender policy they must abort the evaluation with result PERMERROR. |
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http://en.wikipedia.org/wiki/Sender_Policy_Framework
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| | [No title] |
| | Receivers only need to fetch information from senders the first time a query occurs; subsequent fetches can be retrieved from the DNS resolver cache or from a nearer application cache. | | | SPF uses the HELO domain only when the MAIL FROM is null. | | | In a purely factored-style protocol, receivers include pertinent information in the DNS query; sender servers are expected to return a response based on those inputs. |
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http://spf.pobox.com/rationale.txt
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| | SPF - Sender Policy Framework |
| | SPF queries domain name servers and asks them about the zone in mail is received from. | | | SPF can also help block the flood of needless 'bounce' (return to sender) messages created by email worms which put the addresses of innocent third parties in their Return-Path headers. | | | SPF aims to ensure that the domain in the "From" line of an email header isn't forgery. |
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http://www.canadaemails.com/spf.htm
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| | [No title] |
| | The result of the TXT query is a macro-string that is macro-expanded. | | | SPF can be used to verify the sender of a message based on envelope information available at SMTP time or according to the headers after an SMTP transaction has completed. | | | For example, if an SPF client understands versions 1, 2 and 3, and the DNS query results in records of version 1, 2 and 4, then only the record with version 2 is used. |
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http://www.openspf.org/draft-mengwong-spf-01.txt
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| | Thunderbird Extension for Sender Verification |
| | These options are for the SPF verification method, which uses the Received: headers of email to establish the identity of the last server to relay the message to you. | | | The extension uses Sender Policy Framework (SPF) (in a nonstandard way), DomainKeys (DK), and the phishing database of MailPolice. | | | This page describes an extension (plugin) for the Mozilla Thunderbird mail program that reports whether the sender of an email in the From: header was actually the sender of the email. |
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http://taubz.for.net/code/spf
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| | [No title] |
| | With SPF and PRA approved as experimental RFCs this concept attracted some attention on the SPF mailing lists, and so it was added again in version 07 of this memo. | | | The actual SPF RFC removed the zone cut algorithm, and so an alternative is now pointless. | | | Note that it's still necessary to evaluate all mechanisms left to right depth first up to the last mechanism, where a match would result in a "Pass". |
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http://www.xyzzy.claranet.de/home/test/draft-spf-6-3-options-09.xml
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| | qmail SPF (Sender Policy Framework) patch |
| | SPF is something like a DNS based "reverse MX" system to designate permitted senders for mails depending on the domain name. | | | The explanation is the line returned to the SMTP sender when a mail is rejected at the SMTP level. | | | The patch is entirely written using the qmail string and DNS functions, and thus completely integrated into qmail without external dependencies. |
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http://www.saout.de/misc/spf
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| | Sender Policy Framework |
| | Sender Policy Framework (SPF) was designed to counter the problems of forged email: usually found in spam, viruses or deliberate forgeries. | | | SPF addresses this, by providing mail servers information about where email from given domain should originate. | | | When you have generated SPF data for your domain, copy that information and enter it into a TXT record for your root domain in your DNS settings. |
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http://support.easydns.com/spf.php
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| | Define Sender Policy Framework - a definition from Whatis.com - see also: SPF, sender permitted from |
| | The SPF specification defines a policy framework, an authentication scheme, and a machine-readable language. | | | An SPF client program performs a query searching for the correct SPF record, in order to determine whether a message comes from an authorized source. | | | There are seven possible query results, including pass, which means that the message meets the domain's definition for legitimate messages; fail, which means that a message does not meet that requirement; and further stipulations for mail that doesn't fit either category, such as messages from domains that do not publish SPF data. |
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http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci953520,00.html
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| | Sender Policy Framework (SPF) |
| | SPF works by domains publishing a text record in the DNS of those domains to publicly inform which machines send mail from the domain. | | | For more information on SPF and how it works, please visit the Sender Policy Framework Web Site at http://spf.pobox.com. | | | The Sender Policy Framework allows you to check whether a particular email sender is forged or not. |
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http://support.gfi.com/manuals/en/me11/me11manual-1-17.html
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| | Sender Policy Framework (SPF) |
| | In order for SPF to work you need to publish a list of IP addresses that are used to send e-mails to other user's on the Internet. | | | When an IP Address match or does not match the sender's domain a score is assigned to that email. | | | Sender Policy Framework (SPF) tackles email address forgery. |
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http://www.itanetworks.com/ITANetworksWeb/Spf.jsp
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| | AOL tests caller ID for e-mail Tech News on ZDNet |
| | There are currently at least two other competing technical specifications to SPF under review by a subcommittee of the Anti-Spam Research Group of the Internet Research Task Force. | | | In addition, SPF would not affect an increasingly popular method employed by spammers that involves hijacking another computer through a worm in order to launch spam from that machine. | | | Steven Bellovin, a member of the Internet Engineering Task Force, has said that among other problems, SPF could bind a sender too closely to DNS records, and as a result, their employers or ISPs. |
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http://news.zdnet.com/2100-3513_22-5145065.html
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| | An Overview of the Sender Policy Framework |
| | But this is not a problem concerning the SPF implementation — it is a problem in general. | | | SRS is a mechanism for rewriting sender addresses when a mail is forwarded in that way when mail forwarding continues to work within an SPF implementation. | | | This reduces the amount of bandwith required for SPF queries in DNS. |
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http://www.msexchange.org/tutorials/Sender-Policy-Framework.html
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| | [No title] |
| | Publishing SPF is easy and requires no software upgrades on the part of the publisher. | | | AOL is working with industry groups and the Internet Engineering Task Force to examine how to standardize technologies like SPF across the global internet. | | | AOL is continually evaluating standards that provide enhancements to spam fighting for AOL members and the Internet community as a whole. |
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http://postmaster.aol.com/spf/details.html
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| | How SPF works |
| | SPF makes it easy for a domain, whether it's an ISP, a business, a school or a vanity domain, to say, "I only send mail from these machines. | | | And as a user, SPF can help you sort the good from the bad. | | | In this example, AOL.com is the sending domain, and pobox.com is the receiver. |
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http://www.openspf.org/howworks.html
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| | [SPF] Sender Policy Framework Test Suite |
| | These tests are designed to make sure the SPF implementations correctly parse SPF records and detect syntax errors. | | | Now that we have a reasonably stable SPF specification, I have started working on the test suite again to make sure everything matches. | | | These tests are designed to make sure the SPF implementations correctly evaluate SPF records and DNS errors. |
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http://www.schlitt.net/spf/tests
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| | Sender Policy Framework SPF |
| | SpamAssassin 3.0 supports SPF to detect and penalize header forgery. | | | The first mechanism to match provides a result for the SPF query. | | | If none of the mechanisms matched, -all would be evaluated, the result would be fail and the MTA would be justified in rejecting the mail. |
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http://www.akadia.com/services/spf.html
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| | Antispam methods aim to merge CNET News.com |
| | Proposals for how to achieve e-mail verification without scrapping SMTP abound, and many of those proposals have found their way to the IRTF, which is affiliated with the Internet Engineering Task Force. | | | ASRG members sounded an optimistic note about the new unification subcommittee and the prospect of solving the spam problem with protocols, rather than legal curbs or economic disincentives that would force people to pay to send e-mail on a per-message basis. | | | The Anti-Spam Research Group (ASRG) of the Internet Research Task Force (IRTF) early this month formed a subcommittee to hammer out differences between a number of competing protocols that all aim to do the same thing: verify that e-mail senders are who they say they are. |
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http://news.com.com/Antispam+methods+aim+to+merge/2100-1038_3-5096820.html
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| | Antispam framework scores Microsoft endorsement CNET News.com |
| | Wong called Microsoft's embracement of SPF a crucial win for the technology, which has already gained the backing of America Online, EarthLink and Google. | | | An ongoing effort to consolidate antispam authentication schemes took a big step forward with the merging of Sender Policy Framework and Microsoft's Caller ID for E-mail. | | | Readers who read Antispam framework scores Microsoft endorsement also read... |
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http://news.com.com/...+scores+Microsoft+endorsement/2100-1032_3-5220253.html
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| | spf - Want to know more about spf? |
| | SPF: Sender Policy Framework The Anti-Forgery solution That's making the world a Safer place for email. | | | Find the latest resources and information on spf on our website now. | | | SPF: A Sender Policy Framework to Prevent Email Forgery |
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http://sotheavy.com/find/SPF.aspx
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| | Sender Policy Framework |
| | Sender authentication could help solve the spam problem, says Mark Sunner... | | | With more than 60% of e-mail now classified as junk, IT managers need a way to police incoming communications. | | | New technology identifying the senders of e-mail messages has not been widely adopted despite backing from Microsoft, and may not...... |
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http://www.computerweekly.com/A-Z/Landing/1001/1024376/Page1.htm
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| | SPF Sender Policy Framework |
| | So if you enable the SPF filter in your Xwall you will cut down on spam dramatically and you will no longer receive the cheap software offers from your friend ….or worse. | | | This makes it easy for any domain (ISP, business, school and so on) to say, "I only send mail from these machines." In turn Xwall can read the text record of the sending server, then compare that with the return address and …Bye Bye spammer! | | | This is the SPF text entry I made for one of our servers. |
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http://www.xwall.us/xwallspf.htm
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| | [SPF] Sender Policy Framework |
| | The Sender Policy Framework (SPF) system is a way to stop people from forging your domain name in email. | | | The IETF has accepted it for Experimental RFC status, and now "all" I have to do is work with the RFC editor to clean up any last problems with it. | | | As one of a large group of volunteers working on the SPF project, I have developed/maintain a few tools to help out. |
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http://www.schlitt.net/spf
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| | [No title] |
| | This is a whitelist of senders based on current anti-spam technology. | | | SPF is an open standard whose goal is to help stop forgery of e-mail domains and some types of spam as well. | | | Presently this is based on SPF records listed in DNS. |
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http://postmaster.info.aol.com/spf
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| | Sender Policy Framework - Tom Sommer's weblog |
| | After reading on dnsreport.com that one was suppose to add Sender Policy Framework to ones DNS zone before October 1st, I decided to add it to my two domains tsn.dk and dreamcoder.dk. | | | Is SPF not that very framework that Microsoft claims patent rights on? | | | Once SPF gains momentum, the push will come for commercial certification at a cost to be determined. |
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http://blog.dreamcoder.dk/archives/249-Sender-Policy-Framework.html
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| | Erik Isaksson.com Weblog: Sender Policy Framework |
| | Here is a HOWTO that might be better at explaining the syntax of SPF, and a good place for more detailed information is the Internet Draft. | | | Even if SPF isn't able to defeat spam completely, it is in my opinion a pretty good way of at least helping to do so. | | | That is, SPF is designed to stop email spoofing. |
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http://www.erikisaksson.com/blog/2004/07/31/1091282980000.html
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| | TNPI - SPF (Sender Policy Framework) |
| | 6 - if no SPF records are available (or a syntax error was encountered) the contents of this file are overridden by the value of the SPFBEHAVIOR environment variable, if set. | | | 4 - a more stricter rejection mode, which is like 'reject' mode, except that incoming mail will also be rejected when the SPF record says 'softfail'. | | | spfbehavior - Set to a value between 1 and 6 to enable SPF checks; |
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http://www.tnpi.biz/internet/mail/toaster/filtering/patches/spf.shtml
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| | CipherTrust - Sender Policy Framework Statistics |
| | According to Craig Spiezle, director of Microsoft Safety Technology and Strategy team, "This adoption of the Sender ID Framework and the publishing of SPF records is a testament to the broad industry and business commitment to e-mail authentication. | | | For additional information on how to review and implement these e-mail authentication alternatives, please visit www.truste.org/authentication. | | | This progress is critical as e-mail authentication provides an effective means of stopping Internet Protocol (IP) spoofing, a technique used by criminals to fraudulently use registered domain names and execute phishing attempts that lure e-mail recipients into providing personal information. |
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http://www.ciphertrust.com/resources/statistics/spf_stats.php
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| | Thomas Leonard's Home Page |
| | Sender Policy Framework — making it harder to forge email | | | D Programming Language — an improved C, without the cruft |
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http://www.ecs.soton.ac.uk/~tal
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| | CircleID |
| | Apr 03 SSAC considers conditions and factors that could accelerate fragmentation, destabilize root name service and alter the existing name system management framework to a much greater degree than pure for-profit initiatives. | | | Mar 27 The.ORG Advisory Council has been a valuable global resource for the Public Interest Registry (PIR) management in the areas of policy, outreach, new services and support. | | | Apr 12 The Travel Partnership Corporation (TTPC), the non-profit body responsible for developing domain name eligibility policies for the.travel TLD, recommended the inclusion of two new sectors to the list of travel industry entities eligible to hold such domain names. |
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http://www.circleid.com/article/634_0_1_0_C
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| | Sender Policy Framework (SPF) record validator |
| | OpenSPF - Open Sender Policy Framework Community (SPF-Classic) | | | It does not check them via network, this was intentionally omitted in favour of focusing purely on syntactically validating SPF records. | | | Simply pass the validator a string and it will see if it validates as an SPFv1 or SPF-Classic record. |
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http://spfval.codeshare.ca
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| | Thoughts on Sender Policy Framework |
| | SPF is the leading technology to combat this dangerous, escalating practice. | | | Once SPF gains momentum, the push will come for commercial certification at a cost to be determined. | | | Others who have small businesses and use services based on dynamic DNS will also fail. |
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http://blogs.ittoolbox.com/eai/leadership/archives/002786.asp
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| | init1 - SPF: Sender Policy Framework |
| | This might not prevent the spam from reaching your mailboxes at this time, but if you use SpamAssassin 3.0 or up, the mails will be scored with extra points because they originate from unauthorised servers. | | | An easy wizard for creating an SPF record can be found at http://spf.pobox.com/wizard.html. | | | First of all, my server is not being used for this, they are all using open relays/proxies, this is out of my hands. |
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http://eol.init1.nl/content/view/36/2
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| | MX Logic CTO speaks out on spam and authentication |
| | First, it means - as its proponents have always maintained - that authentication is not a panacea for the spam problem, but is merely one strategy in the continuing battle against spam. | | | While authentication of domains using SPF and other schemes is important, it probably will have relatively little impact on the overall flow of spam. | | | As a result, a spammer can register a domain, publish an SPF record for it and then discard the domain just as easily. |
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http://www.networkworld.com/newsletters/gwm/2004/1115msg1.html
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| | MailBucket: xyzzy |
| | for real implementations, or publish a second empty policy: | | | - mainly stuff about spam and SPF (Sender Policy Framework, see | | | You can either ignore it, because "Sender ID" is too broken |
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http://www.mailbucket.org/xyzzy-210377.html
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| | SMTP Sender Policy Framework |
| | Domains can also publish "reverse MX" records to tell the world what machines send mail from the domain. | | | The world can check those records to make sure mail isn't spoofed.With SPF, those 'reverse MX' records are easy to publish: one line in DNS is all it takes." | | | The Role of Configuration Management in Compliance and Policy Enforcement. |
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http://www.networkworld.com/details/7000.html
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| | MX Logic Disses Sender Policy Framework |
| | Scott Chasin of MX Logic, on Sender Policy Framework-cum-Sender ID: "Anybody can go out and purchase a $5 domain name and publish an SPF record. | | | If you could publish your own credit report, how many folks out there would actually trust that?" |
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http://www.emailbattles.com/archive/battles/spam_ajifeeaafe_hf
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| | Jon Lin's Homepage on Comet |
| | JavaCards, the OpenCard Framework and Single Sign On, a nice page concerning smartcard/JavaCard security and its limitations | | | Bo Lavare's Smartcard Security Page, a well organized, up to date page concerning security issues with smartcards. |
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http://www.tesuji.org
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