Kevin Bailey a écrit :
> Hi Guys,
>
> Just a question RE setting up the DNS zone record correctly for a mail
> server.
>
> I have a couple of setups which work but have just copied one and I'm
> getting the following response.
>
> <j.gilb...@watercooledsurf.com>: Host or domain name not found. Name
> service
> error for name=watercooledsurf.com type=A: Host found but no data
> record of
> requested type
>
>
> One zone I have is set up as
>
> ; Zone: grosvenorchambers.co.uk
> ; Generated: Fri Jan 23 14:53:53 2009
> ;
> @ IN SOA ns0.dnsmaster.net.
> hostmaster.dnsmaster.net. (
> 2008110301 43200 1800 604000 86400 )
>
> IN NS ns1.dnsmaster.net.
> IN NS ns2.dnsmaster.net.
> IN NS ns3.dnsmaster.net.
>
> grosvenorchambers.co.uk. IN MX 10
> mail2.freewayprojects.com.
> ftp IN CNAME ftp2.freewayprojects.com.
> mail IN CNAME mail2.freewayprojects.com.
> smtp IN CNAME smtp2.freewayprojects.com.
> webmail IN CNAME webmail2.freewayprojects.com.
> www IN CNAME web2.freewayprojects.com.
>
>
>
> And another is set up as
>
> ; Zone: firetecworld.com
> ; Generated: Fri Jan 23 14:54:29 2009
> ;
> @ IN SOA ns0.dnsmaster.net.
> hostmaster.dnsmaster.net. (
> 2008081001 43200 1800 604800 86400 )
>
> IN NS ns1.dnsmaster.net.
> IN NS ns2.dnsmaster.net.
> IN NS ns3.dnsmaster.net.
> IN MX 10 mail.firetecworld.com.
> IN A 212.84.168.98
>
> ftp IN CNAME ftp2.freewayprojects.com.
> mail IN CNAME mail2.freewayprojects.com.
> smtp IN CNAME smtp2.freewayprojects.com.
> webmail IN CNAME webmail2.freewayprojects.com.
> www IN CNAME web2.freewayprojects.com.
>
wrong.
the MX should not be a cname. see
http://www.rfc-ignorant.org/policy-bogusmx.php
use
IN MC 10 mail2.freewayprojects.com.
instead.
>
>
>
> In both cases I am trying to keep them set up so that if the main server
> fails I can then repoint mail2.freewayprojects.com,
> smtp2.freewayprojects.com, web2.freewayprojects.com etc to the
> secondary/backup server and the service will continue. I.e. I won't
> have to change all the clients DNS records - just the
> *2.freewayprojects.com IP addresses.
>
>
>
> I tried initially to copy the first one.
>
> What is the best/canonical way for setting up DNS reocrds?
>
> We have www happily CNAME'd to the web server address. Similarly for
> mail, ftp, smtp, webmail etc. The mail should just need an MX record.
> Does the mail need an 'A' record of some sort?
>
yes, use A records instead of CNAME. you can generate the zone file
using a script.
