Re: Adding A record for reverse DNS

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Dear Kevin, thank you for your advice:

Just to make it more clear:

Domain registered at Enom, pointing to name servers:

ns3.phpbb3.nl. [213.189.9.32]
ns2.phpbb3.nl. [213.189.9.27]

Both on a FreeBSD Unix box. No exchange there.

Everything there points to my Win2k3 server running exchange @ 85.12.17.104
This machine has AD + DNS enabled. I use the NS of the Data Centre to
forward DNS requests and there they created the PTR for 85.12.17.104/
zebrafilm.info domain.

Your points:


1.Delete the CNAME server.zebrafilm.info

Done on the ns3 and ns2.(freebsd systems


2) Create an A record for server.zebrafilm.info with IP 85.12.17.104,

Done again on the FreeBSD name servers.


3) Assuming this is Exchange, using System manager expand down to the SMTP
virtual server. Right click on the SMTP virtual server, choose properties,
select the Delivery tab, click the Advanced button, In the Fully-qualified
domain name field change server.zebrafilm.local to server.zebrafilm.info.
This must be done on these two servers, not on you local DNS, unless these
two are your local DNS.
ns3.phpbb3.nl. [213.189.9.32]
ns2.phpbb3.nl. [213.189.9.27]

Here I run into trouble because the first two NS are FreeBSD and you state
not to do it on the local Exchange machine.
Before I make errors there, could you confirm I should not change it on my
main Exchange machine.

The first two changes give a missing A record now in the DNS lookup.

So far the the first part.

MX error:

On the FreeBSD NS machines there are two entries for MX
One is pointing to the IP
One is pointing to the domain name.
I guess the last one should be removed?




On 08-09-2006 16:48, in article ura6LX10GHA.324@xxxxxxxxxxxxxxxxxxxx, "Kevin
D. Goodknecht Sr. [MVP]" <admin@xxxxxxxxxxxxxx> wrote:

Bastiaan Houtkooper wrote:
Hi Kevin,

Thanks for your reply. I bit cryptic but yes I think I understand :-)

What I have now is my domain registered on someone else DNS servers
pointing to my windows Server¹s IP. On that server (freeBSD) are A,
Cname, MX etc records all pointing to my server IP.
As mentioned that server is in a DataCentre where I use the COLO ISP
DNS servers as forwarders.
I also run my DNS on the Windows machine but it does not update
outside the security zone. (default settings)

When I run http://www.dnsstuff.com/tools/ptr.ch?ip=85.12.17.104 it
still gives an error.

I am a bit puzzled where to add the right records and if there is a
better way to configure the whole thing.
Everything is working fine, but I want to get it as good as possible.

Thanks for your time and quick replies.

You have several problems that need to be corrected.

The PTR is in place for the IP and says server.zebrafilm.info, which is OK,
BUT, server.zebrafilm.info is a CNAME.
QUESTION SECTION:
server.zebrafilm.info. IN ANY

ANSWER SECTION:
server.zebrafilm.info. 14280 IN CNAME
zebrafilm.info.zebrafilm.info.

Which also does not have an A record, but, it does have an MX record which
makes no sense whatsoever.
QUESTION SECTION:
zebrafilm.info.zebrafilm.info. IN ANY

ANSWER SECTION:
zebrafilm.info.zebrafilm.info. 12814 IN MX 10
85.12.17.104.zebrafilm.info.

Another problem is your mail server HELO name.
zebrafilm.info claims to be non-existent host server.ZebraFilm.local:
220 server.ZebraFilm.local Microsoft ESMTP MAIL Service, Version:
6.0.3790.1830 ready


What you need to do is not so hard to fix.

1) Delete the CNAME server.zebrafilm.info
2) Create an A record for server.zebrafilm.info with IP 85.12.17.104, do
this because the PTR already exists for that name.
3) Assuming this is Exchange, using System manager expand down to the SMTP
virtual server. Right click on the SMTP virtual server, choose properties,
select the Delivery tab, click the Advanced button, In the Fully-qualified
domain name field change server.zebrafilm.local to server.zebrafilm.info.

This must be done on these two servers, not on you local DNS, unless these
two are your local DNS.
ns3.phpbb3.nl. [213.189.9.32]
ns2.phpbb3.nl. [213.189.9.27]




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