MX resord

[Kevin Darcy]

How would delegating a subzone result in *less* maintenance? Bear in mind that for
redundancy, you need at least 2 nameservers for every zone. So:

Subdomain: 1 MX RR + 1 A RR

Subzone: 4 NS RR's (2 in the parent, 2 in the child) + 1 SOA RR + 1 MX RR + 1 A RR + 1
extra zonefile on the master + 1 extra definition in the master's named.conf + 1 extra
definition in the slave's named.conf

Which do you think is easier to maintain?


- Kevin

Prashant Ranade wrote:

> Hello,
> Isn't this mixing zones?? If at all you want to keep the mail server in the different
> zone then I don't think that will be the only machine sitting in the new zone. and if
> there are many machines in the new zone I think creating a new zone will be better to
> administer... even if there are no other machines still isn't seperating zones easy
> to administer rather than mixing things in the same zone file...
> troubleshooting will also be easy in case you have seperate zone files
> Prashant
>
> Kevin Darcy wrote:
>
> > A subzone is not necessary. I believe:
> >
> > whatever.mydomain.com.    in    mx    0    whatever.mydomain.com.
> > whatever.mydomain.com.    in    a    x.x.x.x
> >
> > would suffice. I.e. a new subdomain, but not a new subzone. Technically speaking,
> > you wouldn't even need the MX record, but since mailers follow up a
> > non-productive MX query with an A query, it's more efficient for the MX record to
> > exist.
> >
> > - Kevin
> >
> > Prashant Ranade wrote:
> >
> > > Hello,
> > > yes I think you will have to create another zone for whatever.mydomain.com...
> > > create the zone file for that zone, create the delegation record for that zone
> > > in the parents zone file and then create the MX record for that zone. you can
> > > host this zone on the same server where you are hosting mydomain.com...
> > > I think so because if you don't create this zone then the dns for the
> > > mydomain.com is not going to know where to deliver the mail for
> > > urname at whatever.mydomain.com. it only knows MS records for mydomain.com
> > > let me know if you can get away without ceating any new zone
> > > hope this helps
> > > Prashant
> > >
> > > Jerry Hsieh wrote:
> > >
> > > > Hi,
> > > >
> > > > Please help. I have 2 meial sevrers and these 2 mail servers are
> > > > independent.
> > > > For example, I have a mail account jerry at mydomain.com on the mydomain.com
> > > > already. But I would like to have another mail jerry at whatever.mydomain.com
> > > > on the whatever.mydomain.com machine. My question is, what should I do for
> > > > the MX record? Or I should create another zone for
> > > > whatever.mydomain.com?Thanks for your time.
> > > >
> > > >  mydomain.com.   IN      MX      10      mail.mydomain.com
> > > > ???????????????  IN      MX      ??      whatever.mydomain.com
> > > >
> > > > Regards,
> > > >
> > > > Jerry