Sender Policy Framework for email

[ambo]

Has anyone sucessfully implemented the Sender Policy Framework?

Its meant to allow you to validate the source of email as being valid from your domain and improves your chances of getting valid mail past spam filters.

Apparently there were some big guns like hotmail that check if you are valid... but i haven't heard of anyone implementing it locally.

 

[guest2013-1]

Im busy implementing it on my servers as well, however, only heard hotmail do reverse DNS lookups...

 

[ambo]

Yes, I have implemented SPF on all the domains I administer.

Do you think its made a difference? Cause i'm having major issues with bounce backs and blackhole'd emails on a shared server

 

[ambo]

I've been implementing this across various of my client domains today...

But i was just wondering - which isp's have actually bothered to implement the filtering... certainly none of the big ones i tested had SPF entries in their DNS!!

ic - what sites have you implemented it on? PM me if you prefer...

 

[Person]

If you know your users are well-behaved and always send mail through your servers, you don't need to do anything. (Law firms with their voluminous disclaimers should already be in this category. So should ISPs that provide SMTP AUTH.)

Otherwise, you should set up SMTP AUTH access for your users. Many ISPs already support this; yours may be one of them.

If you're a user, make sure that when you send mail it goes through your ISP's mail servers. You may need to enable Authenticated SMTP if you regularly connect to the Internet from outside your ISP's network.

 

[ambo]

If you know your users are well-behaved and always send mail through your servers...

I'm not quite sure of the relecance of that quote from openspf.org
You still need the DNS SPF entries that will advertise you valid and authorised outgoing servers

 

[ambo]

Had forgotten about this topic

Please could the MWeb employees that linger in this forum raise this & push for it to be implemented...

Yeah right I approached MWeb's admins directly regarding this and they flatly refused to do any implementation of SPF!!

 

[Juggy]

Has anyone sucessfully implemented the Sender Policy Framework?

Its meant to allow you to validate the source of email as being valid from your domain and improves your chances of getting valid mail past spam filters.

Apparently there were some big guns like hotmail that check if you are valid... but i haven't heard of anyone implementing it locally.

I did it about 16 months ago. It's a simple txt record with a list of the valid sending servers. Exchange 2003 supports it with SP2 as far as I know.

"v=spf1 a mx ptr a:mx1.mailqueries.com a:mx2.mailqueries.com a:mx3.mailqueries.com a:mx4.mailqueries.com a:mx5.mailqueries.com a:mx6.mailqueries.com ~all"

This is an example of the record in Windows 2000 DNS.