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Date:      Fri, 13 Jul 2007 09:08:25 +0200
From:      J65nko <j65nko@gmail.com>
To:        cuongvt@fpt.vn, freebsd-questions@freebsd.org
Subject:   Re: is is able to setting up DNS server reverse lookup with DynamicIP?
Message-ID:  <19861fba0707130008y3b8c1e5w426340a92ba14c37@mail.gmail.com>
In-Reply-To: <200707130623.l6D6NZ3I076815@banyan.cs.ait.ac.th>
References:  <46970917.3030502@fpt.vn> <200707130536.l6D5akxS070187@banyan.cs.ait.ac.th> <46971201.8030101@fpt.vn> <200707130552.l6D5qEM7071933@banyan.cs.ait.ac.th> <4697170E.3000909@fpt.vn> <200707130623.l6D6NZ3I076815@banyan.cs.ait.ac.th>

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On 7/13/07, Olivier Nicole <on@cs.ait.ac.th> wrote:
> I understand your problem.
>
> dyndns.com is taking care of the forward dynamic DNS for you.
>
> Now who is in charge of the reverse DNS for 58.187.106.120 (your
> current IP)? I beleive it is FPT.
>
> So FPT should upgrade its own reverse DNS every time it gives an IP to
> your server.
>
> Right now if I make a reverse DNS lookup on 58.187.106.120 it gets
> nothing, while it should get thecuong.gotdns.com.
>
> The easiest way to solve your email problem would be that your server
> sends all the email thought FPT mail server.
>
> As a rule, it is a bad idea to use a machine with a dynamic address to
> be an SMTP server: when the IP changes, the DNS cache will take some
> time to update everywhere, so for some time your email will be sent to
> the wrong IP: mailiong list may decide that your account is dead and
> remove you from the list.
>
> Olivier

This same issue is being discussed at
http://www.bsdforums.org/forums/showthread.php?p=265093#post265093  ;)



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