Date: Sat, 06 Sep 2008 23:59:13 -0500 From: Paul Schmehl <pschmehl_lists@tx.rr.com> To: Andrew Falanga <af300wsm@gmail.com>, FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: mail server DNS configuration questions Message-ID: <F06F69E95199D5BEF48C1365@Macintosh.local> In-Reply-To: <200809061928.28539.af300wsm@gmail.com> References: <200809061928.28539.af300wsm@gmail.com>
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--==========E4A2C0822EB574ADFF42========== Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: quoted-printable Content-Disposition: inline --On September 6, 2008 7:28:28 PM -0600 Andrew Falanga=20 <af300wsm@gmail.com> wrote: > Hi, > > Well, my clients at church are still having issues and after working > with George, a respondant to my original questions, I think that most, > if not all, of my problems are related to DNS and how we've got it > improperly configured. > > First, a crude drawing of how our mail server exists in the world: > > 192.168.2.x/24 72.24.23.252 "lot's of networks" > Private Network <--> CableOne <--> Internet > > Now, our mail server's IP is 192.168.2.23. On the router, he (the > person at whose house the mail server is) has IP forwarding setup so > that mail get's sent to our FreeBSD machine. Using dig, here's the > responses: > The 192.168.0.0/24 network is an IANA reserved network and **does not=20 route** on the internet. You can send mail but you'll never be able to=20 receive any. In order for you to receive email to that server, whatever=20 device you've got in front of it (dsl router, for example) must be=20 configured to "hard code" port 25 to your mail server so that all incoming = mail to the public IP (72.24.23.252) will always go to the 192.168.2.23=20 address, which is the actual address of the mail server. Some mail servers will not receive mail if the IP of the mail server=20 doesn't reverse. Yours does, so that shouldn't be a problem, *however* if = they also try to talk to your mail server to verify that it's actually a=20 mail server that will fail if you don't have port 25 "hard coded". You don't say what the "issues" that you're having are, so that's my best=20 guess about what's wrong. Paul Schmehl, If it isn't already obvious, my opinions are my own and not those of my employer. ****************************************** WARNING: Check the headers before replying --==========E4A2C0822EB574ADFF42==========--
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