virtual domains and zone files

[Barry Finkel]

Andrew <andrew at arda.homeunix.net> wrote:

>>>My mail server hosts a virtual domain that does not include any hosts in
>>>it. Here is the zone file I use with this domain.
>>>
>>># cat /etc/namedb/master/arda.homelinux.net.zone
>>>$ORIGIN .
>>>$TTL 10800      ; 3 hours
>>>arda.homelinux.net      IN SOA  europa.arda.homeunix.net.
>>>postmaster.arda.homeunix.net. (
>>>                                  20030416   ; serial
>>>                                  10800      ; refresh (3 hours)
>>>                                  3600       ; retry (1 hour)
>>>                                  604800     ; expire (1 week)
>>>                                  3600       ; minimum (1 hour)
>>>                                  )
>>>                          NS      io.arda.homeunix.net.
>>>                          NS      europa.arda.homeunix.net.
>>>                          MX      10 callisto.arda.homeunix.net.
>>>
>>>As things stand now, I can deliver mail to user at arda.homelinux.net but I
>>>would like to know if this zone file looks reasonable or if there are
>>>elements that don't need to be there.

Danny Mayer <mayer at gis.net> replied:

>>Since you have no A records at all, neither the NS nor the MX records
>>are usable. If you are going to deliver mail to arda.homelinux.net you need
>>an A record for at least callisto. BIND 9 should complain about these records.
>>I don't see how you could deliver mail to that address unless it's all local to
>>that machine or you have host records that you are not telling us about.
>>You should have A records for io, europa and callisto.

and Andrew <andrew at arda.homeunix.net> replied:

>I do have A records for io, callisto, and europa. They live in the 
>arda.homeunix.net zone file.

You posted this zone file:

     # cat /etc/namedb/master/arda.homelinux.net.zone
     $ORIGIN .
     $TTL 10800      ; 3 hours
     arda.homelinux.net      IN SOA  europa.arda.homeunix.net.
     postmaster.arda.homeunix.net. (
                                       20030416   ; serial
                                       10800      ; refresh (3 hours)
                                       3600       ; retry (1 hour)
                                       604800     ; expire (1 week)
                                       3600       ; minimum (1 hour)
                                       )
                               NS      io.arda.homeunix.net.
                               NS      europa.arda.homeunix.net.
                               MX      10 callisto.arda.homeunix.net.
     
That file looks to me like the zone file for

     arda.homeunix.net

and that zone file has no "A" records.  Please post what you think is
your

     arda.homeunix.net

zone file -- the file that contains the "A" records.  And as it appears
that you have two zone files for the same zone, please post the
relevant lines from your named.conf file -- the lines that reference
each of these two files.
----------------------------------------------------------------------
Barry S. Finkel
Computing and Instrumentation Solutions Division
Argonne National Laboratory          Phone:    +1 (630) 252-7277
9700 South Cass Avenue               Facsimile:+1 (630) 252-4601
Building 222, Room D209              Internet: BSFinkel at anl.gov
Argonne, IL   60439-4828             IBMMAIL:  I1004994