MX records

Barry Margolin barmar at bbnplanet.com
Mon Aug 16 19:17:00 UTC 1999


In article <7p9kuv$g78$1 at nnrp1.deja.com>,
 <thomasschwinn at st-service.net> wrote:
>What's the difference between this MX records?
>
>a-m-t.net.       IN  MX  10  212.172.100.164   ; GLOBALOK
>a-m-t.net.       IN  MX  20  212.172.100.164   ; GLOBALOK
>a-m-t.net.       IN  MX  100 212.172.100.164   ; GLOBALOK

None of them are valid.  MX records must point to hostnames, not IP
addresses.

Other than that, the only difference is the preference level.  The only
difference that makes is if you have multiple MX records for the same name;
they'll be tried in order of increasing preference.

>and what's the difference between GOLBAOK and EXTREF?

The FAQ on granitecanyon.com tells you when you need to use these.
GLOBALOK is used to allow wildcard records, and EXTREF is used to allow
records that point to names outside the domain.

-- 
Barry Margolin, barmar at bbnplanet.com
GTE Internetworking, Powered by BBN, Burlington, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.


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