Re: do you use SPF TXT RRs? (RFC4408)

[Michael Thomas <mike () mtcc com>]

On 10/04/2010 09:54 AM, John Adams wrote:
> Without proper SPF records your mail stands little chance of making it
> through some of the larger providers, like gmail, if you are sending
> in any high volume. You should be using SPF, DK, and DKIM signing.

There should really be no reason to sign with DK too. It's historic.

> I don't really understand how your security company related SPF to DoS
> though. They're unrelated, with the exception of backscatter.

Me either.

Mike

> -j
>
>
> On Mon, Oct 4, 2010 at 9:47 AM, Greg Whynott<Greg.Whynott () oicr on ca>  wrote:
> > A partner had a security audit done on their site.  The report said they were at risk of a DoS due to the fact they 
> > didn't have a SPF record.
> >
> > I commented to his team that the SPF idea has yet to see anything near mass deployment and of the millions of emails leaving our 
> > environment yearly,  I doubt any of them have ever been dropped due to us not having an SPF record in our DNS.  When a client's 
> > email doesn't arrive somewhere,  we will hear about it quickly,  and its investigated/reported upon.      I'm not opposed to 
> > putting one in our DNS,  and probably will now - for completeness/best practice sake..
> >
> >
> > how many of you are using SPF records?  Do you have an opinion on their use/non use of?
> >
> > take care,
> > greg