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MX record question

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Bruce Markey

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Mar 2, 2001, 11:18:21 AM3/2/01
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Hey all..

Just a quickie.. I think somewhere along the lines I made a mistake in my
dns configs..

What would be the correct way to handle this scenario.

We are an isp with a domain of domain1.com
We host another 50 or so domains. I need to point mail for each of those
domains to a single machine. Do i just set an A record for each domain for
mail and point it to that machine? What about reverse dns. That machine
cannot have multiple reverse names can it.

Sorry if i did not explain this too well.

Thanks
bruce


pe...@icke-reklam.ipsec.nu.invalid

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Mar 2, 2001, 2:27:54 PM3/2/01
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Bruce Markey <br...@ddgwireless.com> wrote:

> Hey all..

> Just a quickie.. I think somewhere along the lines I made a mistake in my
> dns configs..

> What would be the correct way to handle this scenario.

> We are an isp with a domain of domain1.com
> We host another 50 or so domains. I need to point mail for each of those
> domains to a single machine. Do i just set an A record for each domain for
> mail and point it to that machine? What about reverse dns. That machine
> cannot have multiple reverse names can it.

it's not needed to have an A record in each domain to handle mail.

What you need is an MX record in each domain, on it's RHS it should have
a domain name (the real FQDN not an CNAME) of the machine you decide to use
as mailserver.


> Sorry if i did not explain this too well.

> Thanks
> bruce

--
Peter Håkanson Phone +46707328101 Fax +4631223190
IPSec sverige Email pe...@ipsec.nu
"Safe by design" Address Bror Nilssons gata 16 Lundbystrand
S-417 55 Gothenburg Sweden


Doug Barton

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Mar 4, 2001, 3:20:39 PM3/4/01
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Bruce Markey wrote:
>
> Hey all..
>
> Just a quickie.. I think somewhere along the lines I made a mistake in my
> dns configs..
>
> What would be the correct way to handle this scenario.
>
> We are an isp with a domain of domain1.com
> We host another 50 or so domains. I need to point mail for each of those
> domains to a single machine.

In the zone file for domain1.com:

smtp IN A 22.33.44.55

In the other zone files:

domainblah.com. IN MX 20 smtp.domain1.com.

Obviously, replace 22.33.44.55 with the real IP.

Good luck,

Doug
--
"Pain heals. Chicks dig scars. Glory . . . lasts forever."
-- Keanu Reeves as Shane Falco in "The Replacements"

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