* shubhendu [linux-india] <29/04/01 15:19 +0530>:
> > Lowest preference number = primary MX. orion, in this case.
> i think u r saying same what we have in our file
> its correct or not ?
yes
> > > yes the CNAME (not exactly ,i think simler to CNAME) entry in our File is
> > > as following
> > You cannot point an MX to a CNAME.
> i got it
There's an RFC which has a rather long and detailed explanation of just why.
MX records are supposed to point to A records. RFC 1034 section 3.6.2 says:
> Domain names in RRs which point at another name should always point at
> the primary name and not the alias.
>
> And multiple CNAME records for the same name are not supposed to be
> allowed, either (BIND 8 requires you to use the "multiple-cnames yes"
> option to override this restriction).
> [root@saraswati] ~# dig @localhost svrec.ernet.in
> ;; ANSWER SECTION:
> svrec.ernet.in. 23h45m43s IN CNAME vikram.svrec.ernet.in.
> vikram.svrec.ernet.in. 23h45m8s IN A 202.141.85.15
vikram is the MX right? That has an A record, ok.
> [root@saraswati] ~# dig @localhost vikram.svrec.ernet.in
> vikram.svrec.ernet.in. 23h41m54s IN A 202.141.85.15
> now if every thing is right i will make final changes to the
> our mani DNS
Do it.
--
Suresh Ramasubramanian <--> mallet <at> efn <dot> org
EMail Sturmbannfuhrer, Lower Middle Class Unix Sysadmin
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