[X4U] Re: Email Server DNS issue?

[David Ledger]

>From: Stroller <macmonster at myrealbox.com>
>On Dec 16, 2005, at 9:29 pm, Nick Scalise wrote:
>>>  Yes, it is NAT.  So it sounds like an internal DNS is the way to go.
>>>  I wish there was a simpler way though - like the old pre-OS X hosts
>>>  file.  Is there anything like that that could be done on each client
>>>  powerbook that needs the functionality.
>>
>>  /etc/hosts will do that for you.
>
>Yeah, except the Powerbook users will take that with them when they try
>to access the server from home. Can the hosts file associate multiple
>IPs for the same host?

It can, but it will always pick the first, so it's only useful for 
reverse lookups.
You can give the printer two names and remember to use the right one.

>Jesse: when people access this server from outside the LAN, where is
>the DNS server that returns the IP located? You can configure BIND to
>give two different "views" of the domain - one for hosts accessing it
>from the internet and one for hosts on the LAN. I'm not sure if this is
>possible if the DNS server isn't within your subnet, tho'

You have to tell your ISP that you're running DNS and get them to add 
an 'NS' entry it their tables for you. Some ISPs may just do this, 
some will refuse outright, and some will only do it if you commit to 
having DNS service available 24x7, possibly by having two servers 
with one or the other up at all times.

David


-- 
David Ledger - Freelance Unix Sysadmin in the UK.
Chair of HPUX SysAdmin SIG of hpUG technical user group (www.hpug.org.uk)
david.ledger at ivdcs.co.uk
www.ivdcs.co.uk