On Mar 19, 2010, at 10:32 AM, Wietse Venema wrote:
> Yahoo runs a modified qmail, and indeed:
>
> int dns_cname(sa)
> stralloc *sa;
> {
> int r;
> int loop;
> for (loop = 0;loop < 10;++loop)
> {
> if (!sa->len) return loop;
> if (sa->s[sa->len - 1] == ']') return loop;
> if (sa->s[sa->len - 1] == '.') { --sa->len; continue; }
> switch(resolve(sa,T_ANY))
> {
> case DNS_MEM: return DNS_MEM;
> case DNS_SOFT: return DNS_SOFT;
> case DNS_HARD: return loop;
> default:
> ...
> }
> }
> return DNS_HARD; /* alias loop */
> }
But my understanding of the RFC says the MTA has to be an A. Why would they be
looking for anything else?
And does this code imply that the g...@[<IP>] address would skip the T_ANY
lookup, and would work? (I know it's supposed to work, but this is Yahoo
modified qmail, not postfix :-)
--
Glenn English
[email protected]
