On Mon, 2 Nov 2009, Mark Andrews wrote:
>
> getaddrinfo() is reporting that aspmx.l.google.com's cannonical
> name is mail-yx0-f102.google.com. Somewhere in the resolution path
> aspmx.l.google.com is being treated as a alias for
> mail-yx0-f102.google.com. In the DNS this is done using a CNAME.
That's the kind of name you get if you do a reverse lookup on an IP
address returned by a lookup of aspmx.l.google.com, e.g.
$ dig +short -x $(dig +short aspmx.l.google.com)
mail-ew0-f49.google.com.
I'm not sure why getaddrinfo() would be doing a reverse lookup to
canonicalize a name. My test machines (Solaris, FreeBSD, Linux) don't.
Tony.
--
f.anthony.n.finch <d...@dotat.at> http://dotat.at/
GERMAN BIGHT HUMBER: SOUTHWEST 5 TO 7. MODERATE OR ROUGH. SQUALLY SHOWERS.
MODERATE OR GOOD.
_______________________________________________
bind-users mailing list
bind-users@lists.isc.org
https://lists.isc.org/mailman/listinfo/bind-users
