Fail to lookup virutal domain name.

[Sam Wun]

Thanks for your answer.

Now, I tried to send email to root at www.sam.com, the /var/log/maillog msg
shows:

Sep 11 21:30:10 fastline sendmail[489]: e8BAUAG00487: SYSERR(swun):
www.sam.com.
 config error: mail loops back to me (MX problem?)
Sep 11 21:30:10 fastline sendmail[489]: e8BAUAG00487: to=<root at www.sam.com>,
ctl
addr=<swun at fastline.bidbid.com> (1000/3000), delay=00:00:00, xdelay=00:00:00,
ma
iler=esmtp, pri=30470, relay=www.sam.com. [172.16.1.1], dsn=5.3.5, stat=Local
co
nfiguration error
Sep 11 21:30:10 fastline sendmail[489]: e8BAUAG00487: e8BAUAG00489: DSN:
Local c
onfiguration error

The content of my /var/qmail/control/virtualdomains is shown below:

www.sam.com:swun

Do you know what is wrong with this problem?

PS. the dig command shows:

swun at fastline /etc/namedb > dig www.sam.com
; <<>> DiG 8.3 <<>> www.sam.com
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; QUERY SECTION:
;;      www.sam.com, type = A, class = IN

;; ANSWER SECTION:
www.sam.com.            5D IN A         172.16.1.1

;; AUTHORITY SECTION:
sam.com.                5D IN NS        sam.sam.com.

;; ADDITIONAL SECTION:
sam.sam.com.            5D IN A         172.16.1.1

;; Total query time: 1 msec
;; FROM: fastline.bidbid.com to SERVER: default -- 192.168.1.1
;; WHEN: Wed Sep 13 12:03:25 2000
;; MSG SIZE  sent: 29  rcvd: 79

Thanks
Sam.

Kevin Darcy wrote:

> PTR's are a special case for named: they are never "cycled" or
> "randomized", but always given out in "fixed" order. mishi.bidbid.com is
> the first PTR with the name 1.1.16.172.in-addr.arpa in your zonefile, so
> it's always given as the first record in the answer. If you want to see
> the *other* PTR records in the answer, with nslookup you need to turn on
> "debug". Or just use "dig".
>
> If you want one of the other PTR's to show up first, then rearrange their
> order in the zonefile.
>
> Then again, except for DNS query tools, nothing really knows or cares
> about the other answers in the response beyond the first, so why even
> bother having those extra PTR's?
>
> Even better, why even bother having 4 A records? Make 3 of them aliases.
> Then if you ever want to change the underlying IP address, you only have 1
> record to change.
>
> - Kevin
>
> Sam Wun wrote:
>
> > HI,
> >
> > I have 3 domain names in my server, fastline.bidbid.com,
> > mishi.bidbid.com
> > and www.sam.com, where www.sam.com is a virtual host.
> > fastline.bidbid.com
> > is pointing at 192.168.1.1, mishi.bidbid.com is pointing at
> > 172.16.1.1, and www.sam.com also pointing at 172.16.1.1,  thus:
> >
> > fastline.bidbid.com -> 192.168.1.1
> > mishi.bidbid.com -> 172.16.1.1
> > www.sam.com -> 172.16.1.1
> >
> > when I do nslookup on the www.sam.com ( the virtural name), it shows:
> >
> > swun at fastline ~ > nslookup www.sam.com
> > Server:  fastline.bidbid.com
> > Address:  192.168.1.1
> >
> > Name:    www.sam.com
> > Address:  172.16.1.1
> >
> > But the following may not be right?
> >
> > swun at fastline ~ > nslookup 172.16.1.1
> > Server:  fastline.bidbid.com
> > Address:  192.168.1.1
> >
> > Name:    mishi.bidbid.com
> > Address:  172.16.1.1
> >
> > I would expect nslookup 172.16.1.1 should show me the Name www.sam.com
> > as
> > well?
> > What may be wrong with my setting then?
> >
> > Here is my db.sam zone file:
> > swun at fastline /etc/namedb > cat db.sam
> > $TTL 432000
> > @ IN  SOA sam.sam.com. root.sam.sam.com. ( 2000090700 10800 3600 604800
> > 86400 )
> >   IN  NS  sam.sam.com.
> >
> > localhost            IN  A     127.0.0.1
> > sam                  IN  A     172.16.1.1
> > sam                  IN  MX    10 sam.sam.com.
> >
> > www.sam.com.         IN  A     172.16.1.1
> >
> > And my db.172.16.1.1 file:
> > swun at fastline /etc/namedb > cat db.172.16.1
> > $TTL 432000
> > @ IN  SOA fastline.bidbid.com. root.fastline.bidbid.com. ( 2000090700
> > 10800
> > 3600 604800 86400 )
> >   IN  NS  fastline.bidbid.com.
> >   IN  NS  mishi.bidbid.com.
> >
> > 1.1.16.172.IN-ADDR.ARPA.        IN  PTR   mishi.bidbid.com.
> > 200.1.16.172.IN-ADDR.ARPA.      IN  PTR   db.bidbid.com.
> >
> > 1.1.16.172.IN-ADDR.ARPA.        IN  PTR   www.sam.com.
> > 1.1.16.172.IN-ADDR.ARPA.        IN  PTR   www.rolandx.com.
> > 1.1.16.172.IN-ADDR.ARPA.        IN  PTR   www.fineworkx.com.
> >
> > Thanks
> > Sam