Date:  Sat, 23 Feb 2008 09:47:55 -0000
From:  "Martyn Bailey" <martyn (at mark) solis.co.uk>
Subject:  [coba-e:12125] Re: SPF records for CentOS machines
To:  "JMG Support" <JMG-Support (at mark) JMG-Enterprises.com>, coba-e (at mark) bluequartz.org
Message-Id:  <47BFEBCB.9943.B7FB9@localhost>
In-Reply-To:  <004501c875c7$6ce72b10$46b58130$@com>
X-Mail-Count: 12125

On 22 Feb 2008, at 20:54, JMG Support wrote:

> I was wondering if someone could tell me something that I am not
> seeing about SPF records.
> 
> Are there records written for each domain on the server?  If hosting
> 200 names, then are there 200 records?
> 
> What exactly is the record - An example for a domain called
> example.com?

The SPF is a simple text statement in the DNS information given to 
the rest of the world.  In very much the same way as you'll have a 
DNS 'A' record telling the world where to go to get the website, the 
SPF tells the world that mail for the domain is sent via 'named' mail 
server - mail sent via other servers not listed, may therefore be 
spam.

When (some) remote MTAs see an email from 'domain', they'll 
check the route it took, check the SPF record and if all seems fine, 
they'll allow the email through.

Not sure if this is actually what you were asking, hope it helps 
anyway :-)