John, > -----Ursprüngliche Nachricht----- > Von: John R. Levine [mailto:jo...@iecc.com] > Gesendet: Samstag, 5. Dezember 2009 01:54 > An: Andre Engel > Cc: nanog@nanog.org > Betreff: Re: AW: SPF Configurations > > >> Right. The only major mail system that pays attention to SPF is > >> Hotmail, but there are enough small poorly run MTAs that use it that > >> an SPF record which lists your outbounds and ~all (not -all) can be > >> marginally useful to avoid bogus rejections of your mail. > > > > For example : > > [ various large ISPs that publish SPF ] > > Perhaps this is a language problem. In English, "publishes" is not a > synonym for "pays attention to." As I said, you need to publish SPF > to get mail into Hotmail. That's why people do it.
As I said im almost german :-) Some major providers ,1&1 for example, assigned their customers the "responsibility" to "pay attention on SPF" for getting mails into their boxes.(decision between suspicious or not) > > I know there is a problem so far with forwarded emails but there is > also a > > solution : > > [ hoary SRS proposal to change every SMTP server in the world to make > them > > match what SPF does ] > > Sigh. I do not want to change every SMTP servers in the world. I just gonna show an useful option .-) > > Every time a mail arrives that is an SRS address the password and > timestamp > > could be checked, and faked or outdated recipients could be rejected. > > You might want to look at BATV, which has nothing to do with SPF, but > I have found is quite useful for recognizing spam blowback. Sure ! For instance If your are providing an mail cluster for your customer bills, a newsletter server or a cooperated mail cluster and you know that you are sending emails only to receivers email boxes BATV is indeed a awesome tool. But if you are performing a shared mail cluster for your webhosting or your Dial in customers which are using for instance some special kinds of mailing lists maybe you need a additional solution. >From a reputation perspective Id like the idea to combine a set of anti spam tools if it is useful. Indeed MAAWG is not "the badest place" to learn about. > R's, > John > > PS: > > > This message (including any attachments) is the property of FHE3 and > may > > contain confidential or privileged information. Unauthorized use of > this > > communication is strictly prohibited and may be unlawful. If you have > > received this communication in error, please immediately notify the > sender > > by reply e-mail and destroy all copies of the communication and any > > attachments. > > Our policy is to send messages with confidentiality notices to all of > your competitors. Sure! Im here to learn *** .-) Cheers Andre -- Andre Engel Consulting Program Director, Email and Cyber Intelligence Services "..no space left on the device/Kein Weltraum links auf dem Gerät" FHE3 GmbH P: +49 721 869 5907 Scheffelstr. 17a M: +49 160 962 44476 76135 Karlsruhe andre.en...@fhe3.com http://www.fhe3.com/ Amtsgericht Mannheim, HRB 702495 Umsatzsteuer-Ident: DE254677931 Geschäftsführer: Peter Eisenhauer, Michael Feger, Dimitrij Hilt *** This email is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE ,...