Gerrit P. Haase wrote:
Hallo Mike,
Am Freitag, 8. Oktober 2004 um 03:16 schriebst du:
>>FYI:
>>>> Anyone interested in enabling SPF (plus MS CALLER-ID if desired) for
>>>> their Postfix MTA / DbMail system?
>>>> This is not intended as a recommendation but if you have considered
>>>> implementing the new SPF I have been running the Postfix SMTP policy
>>>> daemon with Postfix/DbMail with good result.
>>>> Many other? What are these many others? It al ldoesn't work...
Answer follows. I will only list a dozen but there are more.
1) Bonded Sender Program
http://www.bondedsender.com/
2) Trusted Sender Program
http://www.trustedsender.com/
http://www.pcmag.com/article2/0,1759,163856,00.asp
http://www.privacyassociation.org/docs/keonigppt.pdf
3) Sender ID Framework
http://www.microsoft.com/mscorp/twc/privacy/spam_senderid.mspx
4) Sender Policy Framework
http://spf.pobox.com/objections.html
5) Trusted-Class Email
http://www.goodmailsystems.com/
6) Trusted Email - A Netherlands Solution
http://imsc-dmim.usc.edu/publications/TrustedEmail.pdf
http://imsc-dmim.usc.edu/publications/Trusted_Email-proof.pdf
7) Sender ID Solution
http://www.clickz.com/features/insight/article.php/3391481
8) DomainKeys
https://www.sendmail.com/smi/news/pressrelease.jsp?eventOID=80351&localId=USA
9) Sender ID Phishing Solution
http://www.securesynergy.com/securitynews/newsitems/2004/aug-04/240804-05.htm
10) IM2000
http://cr.yp.to/im2000.html
11) ASTA - The Anti-Spam Technical Alliance
http://docs.yahoo.com/docs/pr/pdf/asta_soi.pdf
12) Email AUthentication
http://www.clickz.com/news/article.php/3317481
Further reading ...
14) Proposals Offer Small Steps to Stop Spam
http://itmanagement.earthweb.com/columns/executive_tech/print.php/3345291
>>>> No, I believe SPF is harmful. See here for good introduction to the
>>>> mess:
>>>>
http://homepages.tesco.net/~J.deBoynePollard/FGA/smtp-spf-is-harmful.html
"SPF is merely one component in a balanced anti-spam strategy. It may
help some; it may hurt others. SPF tries to break as few eggs as it can
by providing a range of conformance levels. Many people believe that SPF
is a strong solution because it helps many while hurting few." -- Meng
Weng Wong
SPF Creator Meng Weng Wong answers Objections raised at
http://spf.pobox.com/objections.html
As I said,
"This is not intended as a recommendation but if you have considered
implementing the new SPF I have been running the Postfix SMTP policy
daemon with Postfix/DbMail with good result."
best...
Mike
