Re: PTR Records
- From: "Kevin D. Goodknecht Sr. [MVP]" <admin@xxxxxxxxxxxxxx>
- Date: Tue, 29 Nov 2005 08:05:04 -0600
MC <mc@xxxxxxxx> wrote:
> Hi Herb,
>
> Thanks for your reply. The info that I found was from DNSReport.com.
>
> The domain is cowetaschools.net. I appreciate your help!
This domain is not the only domain that has DNS problems in the setup. There
are several issues that need to be cleared up before your problems will go
away.
Your mail server's HELO name is dewey.cowetaschools.net, there is no A
record matching that name.
You need to create an A record for dewey.cowetaschools.net, then delete all
your MX records in all your domains and create new MX records giving
dewey.cowetaschools.net as the mail server name.
Then you need to delete all five of the PTR records that exist for this IP
and create one PTR that points to dewey.cowetaschools.net.
For the other domains you can create CName records for whatever name you
choose to have these clients access the mail server by. Mail clients do not
look for and do not care what the MX record says. However, when a mail
server tries to deliver mail everything should match up. Some mail servers
will refuse to accept mail from or deliver mail to your mail server because
nothing matches up. Do not use the CNAME in the MX records, the MX records
should point to the mail servers HELO name regardless of what domain the MX
record belongs to.
You should also create a SPF record for your domains, too. You can use the
wizard a http://spf.pobox.com to create the data for the SPF record, you can
use the same data for all domains since they all use the same mail server.
You also have NS record problems in your domains. It is not necessary for
the NS record to be in the same domain as the domain it is hosting, but it
is required that NS records match the NS records listed on the public record
for the domain.
As it is now, you only have two domains which have the correct NS records
that match the public records.
--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps
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