Re: PTR Records

MC <mccato@xxxxxxxxxxx> wrote:
> Sorry, yes, we have 3 mail servers. But dewey is the only server that
> receives mail for our domain. The other ones (Exchange 2000) send
> mail, though. Does that complicate matters?

Yes, it does complicate matters, and is at least one reason why your having
trouble with AOL and Compuserve, the SPF should fix that. Just make sure you
have a SPF record for all hosted mail domains.

Now it looks like you changed the HELO name of the mail server, you need to
change that back to dewey.cowetaschools.net. It is very important this be
done just right, or you'll have the same problems you've had in the past.
See:
dewey.cowetaschools.net claims to be host cowetaschools.net [but that host
is at 168.9.128.18, not 168.9.128.29].


> I did include all of them
> in the SPF record; but I didn't include any PTR info in the SPF
> record. Should I include that?

Any mail server that sends mail for your domains needs to be in the SPF and
have a PTR. The SPF needs to be added to all your domains, not just the
default domain. Any domain name that these mail servers send mail for needs
the same SPF record.

It looks like you only added one SPF record. Add the SPF to the rest of the
domains, use the same text in each SPF.

> Since only dewey receives mail, I
> should just leave the one MX record, right?

If dewey is the only server that recives mail it should be the only MX.




--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps
===================================
When responding to posts, please "Reply to Group"
via your newsreader so that others may learn and
benefit from your issue, to respond directly to
me remove the nospam. from my email address.
===================================
http://www.lonestaramerica.com/
http://support.wftx.us/
https://secure.lsaol.com/
===================================
Use Outlook Express?... Get OE_Quotefix:
It will strip signature out and more
http://home.in.tum.de/~jain/software/oe-quotefix/
===================================
Keep a back up of your OE settings and folders
with OEBackup:
http://www.oehelp.com/OEBackup/Default.aspx
===================================


.

Relevant Pages

  • Re: How to disable SPF in Win2003 DNS?
    ... the mail server of his recipients provider. ... I called the ISP of the recipient, and they said they do have SPF ... This will NOT stop others from checking the SPF record and possible ...
    (microsoft.public.windows.server.dns)
  • Re: Sender Spoofing via SMTP
    ... > connect to the server via Telnet to 25 and send my cubemate an email ... the decision to relay mail or not. ... It's called SPF. ... Looks up the SPF record in the DNS for the domain given in MAIL ...
    (Security-Basics)
  • Re: SPF record question
    ... Well, any how, nothing can be done and let us hope the SPF business really ... >> Is there any field in SPF record by which one can define ... >> that their mail server which is for x domain can also ... or take the chance of having it rejected as a spoofed email ...
    (microsoft.public.windows.server.dns)
  • Re: email spoof
    ... to support SPF. ... Now, when a mail server receives email, the one ... time to set up a SPF record for their domain. ...
    (microsoft.public.backoffice.smallbiz2000)
  • Re: PTR Records
    ... >> Sorry, yes, we have 3 mail servers. ... > trouble with AOL and Compuserve, the SPF should fix that. ... > have a SPF record for all hosted mail domains. ... >> Since only dewey receives mail, ...
    (microsoft.public.windows.server.dns)