[Charlug] E-Mail & DNS

[Don Parris]

On 1/26/07, nkr1ptd <nkr1ptd at gmail.com> wrote:
>
> You probably have a couple problems.  Typically when setting up DNS if one
> has an Internet connection, then you need to have inside DNS and outside
> DNS.  This is for a couple reasons, you really should separate them for
> security reasons.  Also if you use the same DNS on the inside as outside =
and
> something changes like the IP address typically it will not update the
> internal DNS so you will not be able to get to the box on the outside.
> Lastly if you have a name that is listed the same on the inside and outsi=
de
> then your internal domain will take precident over your external one for
> your internal users.
>
> Now all that being said postfix can be configured to see both the internal
> domain and the external domain.  Just make sure you have both listed and
> everything will be fine.
>
> -brandon



I haven't setup my own DNS server yet, as I thought that could create some
kind of conflict with the outside world.  My understanding of postfix is
that, given 2 domains (in one of the main.cnf lines), they will both be
considered equal unless you configure virtual domains.  I can do the latter,
which might allow me to use the "outside" domain name as my e-mail address.
I basically want my e-mail to share the webserver's domain name.  You can
visit matheteuo.org, and send mail to matheteuo.org.  Something tells me I'm
making this more confusing than it needs to be, which is one reason I'm not
a professional Linux admin. ;-)

I may just follow that Debian howto I saw for the mail gateway server - it
takes you through installing Debian to postfix, sasl, etc., and is geared
toward my specific question - as opposed to this book, which is more general
in nature.

Don
-- =

D.C. Parris
Minister, Editor, Free Software Advocate
http://www.linkedin.com/in/dcparris
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