weird MX behavior
Mark Andrews
Mark_Andrews at isc.org
Thu Oct 5 21:22:10 UTC 2006
RFC 1034, Section 3.6.2: "If a CNAME RR is present at a node,
no other data should be present; this ensures that the data for
a canonical name and its aliases cannot be different. This rule
also insures that a cached CNAME can be used without checking
with an authoritative server for other RR types."
> hi,
>
> i'm running "bind-chroot-9.2.4-16.EL4" on "CentOS release 4.4 (Final)".
>
> this config works fine ...
> ######################################################################
> $TTL 86400
> @ IN SOA ns1.mydomain.com.
> dns-admin.mydomain.com. (
> 2006100201 ; Serial
> 3600 ; Refresh
> 600 ; Retry
> 1209600 ; Expire
> 3600 ) ; Minimum
>
> IN NS ns1.mydomain.com.
> IN NS ns2.mydomain.com.
>
> funny 300 IN A 10.10.10.10
> www.funny 300 IN A 10.10.10.10
> @ 300 IN MX 10 mail.boss.com.
> @ 300 IN MX 20 mail1.boss.com.
> @ 300 IN MX 20 mail2.boss.com.
> funny 300 IN MX 10 mail.boss.com.
> funny 300 IN MX 20 mail1.boss.com.
> funny 300 IN MX 20 mail2.boss.com.
> ######################################################################
> i changed my config to
> ######################################################################
> $TTL 86400
> @ IN SOA ns1.mydomain.com.
> dns-admin.mydomain.com. (
> 2006100201 ; Serial
> 3600 ; Refresh
> 600 ; Retry
> 1209600 ; Expire
> 3600 ) ; Minimum
>
> IN NS ns1.mydomain.com.
> IN NS ns2.mydomain.com.
>
> funny 300 IN CNAME www.hugo.com.
> www.funny 300 IN CNAME www.hugo.com.
> @ 300 IN MX 10 mail.boss.com.
> @ 300 IN MX 20 mail1.boss.com.
> @ 300 IN MX 20 mail2.boss.com.
> funny 300 IN MX 10 mail.boss.com.
> funny 300 IN MX 20 mail1.boss.com.
> funny 300 IN MX 20 mail2.boss.com.
> ######################################################################
>
> mailing to funny.mydomain.com doesn't work anymore. i don't get any MX
> records for
> funny.mydomain.com !
>
> so all i've been doing is that i changed the A record to a CNAME which
> i think hasn't got anything to do with mailing - or am i wrong ?
>
> any help would be greatly appreciated
>
> regards
> willi grundner
>
>
--
ISC Training! October 16-20, 2006, in the San Francisco Bay Area,
covering topics from DNS to DHCP. Email training at isc.org.
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews at isc.org
More information about the bind-users
mailing list