Date:  Mon, 02 Oct 2006 06:49:58 -0500
From:  "Steve Davis" <steve (at mark) zio.com>
Subject:  [coba-e:07345] Re: Programming the BQ ui
To:  coba-e (at mark) bluequartz.org
Cc:  coba-e (at mark) bluequartz.org
Message-Id:  <fc.000f8147002517093b9aca00473905de.25170a (at mark) fc.zio.com>
In-Reply-To:  <200610020705.37006.bq (at mark) solarspeed.net>
References:  <451B8BC5.4090106 (at mark) enavn.com> <200610011715.27432.bq (at mark) solarspeed.net> <fc.000f8147002514bf3b9aca00473905de.2514c2 (at mark) fc.zio.com> <200610020705.37006.bq (at mark) solarspeed.net>
X-Mail-Count: 07345

Hi Mike,

Yes I understand the line items you placed below. However PTR records are becoming
increasingly important for domains to have their mail accepted by other smtp servers
which are doing dnsbl and other reverse name lookups. If the reverse name is the same as
the smtp query name  (telnet mail.domains.com 25) and it reports the same as the reverse
PTR name, then no exceptions will occur within the requesting mail server. And mail gets
delivered.

Internally, the local smtp server likes A records, not always, but it is such a simple
change that it always makes sense.

Still, this is no help for alias's bouncing on the BQ.


coba-e (at mark) bluequartz.org writes:
>Hi Steve,
>
>> Good thought about cnames for MX records. It really is best to use PTR
>> records. But the maillog simply says there is no user with that name when
>> any alias is used. I can remove and reinstall and I get the same bounce. I
>> have also tried to makemap on both access, aliases, and virtusertable with
>> no success.
>
>No, a PTR is just a reverse record. What you need is records like this:
>
>Assuming that the site is named "www.domain.com" in the GUI:
>
>www.domain.com		--- A Record ---> 	www.domain.com
>domain.com		--- A Record ---> 	www.domain.com
>www.domain.com		--- MX Record ---> 	www.domain.com
>domain.com		--- MX Record ---> 	www.domain.com
><IP>			--- PTR --->	domain.com
>
>That's just the basic records. If you want to use stuff like mail.domain.com,
>smtp.domain.com, etc, then you follow the pattern. Righthand side should always be how
>the domain is named in the GUI - full domain- & hostname, with the exception of the PTR,
>which usually goes to just the domain-name. 
>
>For the PTR to work you need "reverse delegation authority" from your IP address range
>owner anyway.
>
>-- 
>
>With best regards,
>
>Michael Stauber



-----------------------------------
Stephen Davis 
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Office 256.534.7327
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