I'm looking for a little help creating SPF records. I'm trying to use
the tools at openspf.org.
We only have one server that sends out mail for our domain. We have a
secondary server that accepts email sent to our domain if our primary
server is down (myriadnetwork.com). After going through the creation
tool, it generated:
To be put in our zone file:
rogersbenefit.com. IN TXT "v=spf1 a mx mx:rogersbenefit.com ~all"
To be put in our DNS records:
mail.rogersbenefit.com. IN TXT "v=spf1 a -all"
mx2.myriadnetwork.com. IN TXT "v=spf1 a -all"
We host our DNS records at Network Solutions. If anyone else uses
NetSol for the DNS records, how do we go about adding these lines to our
DNS records? And also, is it recommended to use the "all" modifier or not?
Kevin
Jim Comerford wrote:
... but I noticed the domains that we were seeing this with did not
have any SPF records in place. So when I saw this sudden increase
come through, I added a strict SPF policy for that domain. The
backscatter for that domain all but stopped. ...
Good thing to check... the latest domain to get hit did NOT have an
SPF record (and this seems to have been the worst so far)... BUT MOST
of the ones that did get hit - did have an SPF record and we still get
backscatter.
We typically add SPF on all domains.. but in reviewing we had missed a
couple of them.
Hopefully the Filter that David is referring to will help.
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