rcaron at nwdemarc
Mar 21, 2008, 8:12 AM
Post #5 of 5
(1348 views)
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Thanks Dan
This is what I have listed in my dns
"v=spf1 ip4:209.180.202.197 -all"
You are right it is a static IP and it will change. Thank god for
transparent fire walls.
It is all updated thanks a lot.
Rob C
-----Original Message-----
From: Dan_Mitton [at] ymp [mailto:Dan_Mitton [at] ymp]
Sent: Thursday, March 20, 2008 3:50 PM
To: spf-help [at] v2
Subject: Re: [spf-help] SPF Record Setup
Rob,
I'm not sure that I would agree with the spf wizard. Lets break it
down:
ip4:209.180.202.197/24 - is kind of odd. The /24 says only 24 bits are
significant so 209.180.202.0-209.180.202.255 are valid
a - says any a record
mx - any mx record
a:mx2.dnsmadeeasy.com - specifically mx2.dnsmadeeasy.com
a:mail.nwdemarc.com - specifically mail.nwdemarc.com
~all - soft fail
If you have a static IP address that you know is not going to change,
something like:
"v=spf1 ip4:209.180.202.197 ~all"
should be all you need. You could also do:
"v=spf1 a:mail.nwdemarc.com ~all"
but the first one saves a DNS lookup on the receiving side.
You might also want to consider using -all, hard fail, rather then the
soft fail.
Dan
Please respond to spf-help [at] v2
To: <spf-help [at] v2>
cc: (bcc: Dan Mitton/YD/RWDOE)
Subject: [spf-help] SPF Record Setup
LSN: Not Relevant
User Filed as: Not a Record
I have setup an SPF record to prevent our e-mails from
being spoofed. But I don't know it is right.
I have on domain
Nwdemarc.com
And the mail is at mail.nwdemarc.com and the back up is at
mx2.dnsmadeeasy.com. I used the spf wizard and this is what I got.
"v=spf1 ip4:209.180.202.197/24 a mx a:mx2.dnsmadeeasy.com
a:mail.nwdemarc.com ~all"
mail.nwdemarc.com is the only server that sends out mail.
mx2.dnsmadeeasy.com only collects mail when mail.nwdemarc.com is down.
When mail.nwdemarc.com is up and ready for mail mx2.dnsmadeeasy.com
sends all the mail that it collets to mail.nwdemarc.com.
I am hopping that this is right.
Thank you
Rob Caron
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