Mailing List Archive: SPF: Help

Sender ID (spf 2.0)

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daniel.thorpe at Communigator

Apr 17, 2008, 1:31 AM

Post #1 of 4 (311 views)
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Sender ID (spf 2.0)

Hi All,

I am keen on getting email deliverability up for our company. One of my
domains is sgml1.co.uk for example. In this domain we send from any IP
in the following SPF record already in place...

v=spf1 ip4:207.45.127.224/27 ip4:207.45.127.216/29 ip4:207.45.127.208/29
~all

We sub domain this domain per customer of ours, one example is
thegators.sgml1.co.uk. This domain has the following SPF record...

v=spf1 include:sgml1.co.uk -all

This means we force the customer to use their sub domain as the sender
address.

Ive been monitoring the SPF chatter on this list box for a while and
just saw talk of separate TXT records for Sender ID in the form of
"spf2.0/mfrom", or "spf2.0/mfrom,pra" etc. Now it's the first time ive
seen this and now im thinking I need to setup the same thing in my own
DNS. I thought the SPF TXT record I had was suitable for SPF and Sender
ID? Email authentication check sites I have used in the past said both
were ok for the domain.

So would just like some clarification really about this spf2.0. Do I
need to set it up? Will I get possibly better deliverability by having
the DNS records in place?

Thanks all,

Dan.

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steve at teamITS

Apr 17, 2008, 8:08 AM

Post #2 of 4 (286 views)
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RE: Sender ID (spf 2.0) [In reply to]

Daniel Thorpe wrote on 4/17/2008 3:31:14 AM:

> I am keen on getting email deliverability up for our company.

SPF doesn't affect "deliverability," it helps prevent others
from sending mail using your domain.

> We sub domain this domain per customer of ours, one example is
> thegators.sgml1.co.uk. This domain has the following SPF record...
>
> v=spf1 include:sgml1.co.uk -all
>
> This means we force the customer to use their sub domain as the sender
> address.

Actually, it means you force them to use your SMTP servers to
send mail.

> I thought the SPF TXT record I had was suitable for SPF and Sender
> ID?

http://www.openspf.org/SPF_vs_Sender_ID

-----
SPF FAQ: http://www.openspf.org/FAQ
Common mistakes: http://www.openspf.org/FAQ/Common_mistakes

- Steve Yates
- ITS, Inc.
- "You got the whole blanket," said Tom coldly.

~ Taglines by Taglinator - www.srtware.com ~

-------------------------------------------
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daniel.thorpe at Communigator

Apr 18, 2008, 4:21 AM

Post #3 of 4 (276 views)
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RE: Sender ID (spf 2.0) [In reply to]

Hi Steve,

So based on my spf1 record...

v=spf1 ip4:207.45.127.224/27 ip4:207.45.127.208/29 ip4:207.45.127.216/29
~all

Is this a valid spf2.0 record...

spf2.0/pra,mfrom ip4:207.45.127.224/27 ip4:207.45.127.208/29
ip4:207.45.127.216/29

???

Thanks,
Dan.

-----Original Message-----
From: Steve Yates [mailto:steve[at]teamITS.com]
Sent: 17 April 2008 16:08
To: spf-help[at]v2.listbox.com
Subject: RE: [spf-help] Sender ID (spf 2.0)

Daniel Thorpe wrote on 4/17/2008 3:31:14 AM:

> I am keen on getting email deliverability up for our company.

SPF doesn't affect "deliverability," it helps prevent others
from sending mail using your domain.

> We sub domain this domain per customer of ours, one example is
> thegators.sgml1.co.uk. This domain has the following SPF record...
>
> v=spf1 include:sgml1.co.uk -all
>
> This means we force the customer to use their sub domain as the sender
> address.

Actually, it means you force them to use your SMTP servers to
send mail.

> I thought the SPF TXT record I had was suitable for SPF and Sender
> ID?

http://www.openspf.org/SPF_vs_Sender_ID

-----
SPF FAQ: http://www.openspf.org/FAQ
Common mistakes: http://www.openspf.org/FAQ/Common_mistakes

- Steve Yates
- ITS, Inc.
- "You got the whole blanket," said Tom coldly.

~ Taglines by Taglinator - www.srtware.com ~

-------------------------------------------
Sender Policy Framework: http://www.openspf.org
Modify Your Subscription: http://www.listbox.com/member/
Archives: http://www.listbox.com/member/archive/1020/=now
RSS Feed: http://www.listbox.com/member/archive/rss/1020/
Powered by Listbox: http://www.listbox.com

-------------------------------------------
Sender Policy Framework: http://www.openspf.org
Modify Your Subscription: http://www.listbox.com/member/
Archives: http://www.listbox.com/member/archive/1020/=now
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steve at teamITS

Apr 18, 2008, 8:35 AM

Post #4 of 4 (277 views)
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RE: Sender ID (spf 2.0) [In reply to]

Daniel Thorpe wrote on 4/18/2008 6:21:41 AM:

> spf2.0/pra,mfrom ip4:207.45.127.224/27 ip4:207.45.127.208/29
> ip4:207.45.127.216/29

Based on the SPF web site I think it's spf2.0/mfrom,pra if you
want to protect both. Also you're missing the "all".

See also "Third-Party Verification Tools and Resources" on:

http://www.microsoft.com/mscorp/safety/technologies/senderid/resources.m
spx

That might help.

-----
SPF FAQ: http://www.openspf.org/FAQ
Common mistakes: http://www.openspf.org/FAQ/Common_mistakes

- Steve Yates
- ITS, Inc.
- I've been rich and I've been poor. Rich is better.

~ Taglines by Taglinator - www.srtware.com ~

-------------------------------------------
Sender Policy Framework: http://www.openspf.org
Modify Your Subscription: http://www.listbox.com/member/
Archives: http://www.listbox.com/member/archive/1020/=now
RSS Feed: http://www.listbox.com/member/archive/rss/1020/
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