On Mon, Mar 09, 2009 at 08:46:12PM +0530, Krishna Murthy wrote:
> I have reject_unknown_client in my smtpd_recipient_restrictions
Don't. This restriction is to aggressive. It is only useful in combination
with other tests (applied to specific netblocks, sender domains, ...)
> The above behavior suggests that postfix expects a PTR -> A -> PTR -> A
> mapping. Is my understanding right?
Same idea but there is no second PTR required:
2.2.0.192.in-addr.arpa IN PTR mail.example.com.
mail.example.com. IN A 192.0.2.1
mail.example.com. IN A 192.0.2.2
mail.example.com. IN A 192.0.2.3
- The address resolves to a name via one PTR record (the first,
additional PTRs are ignored)
- The name resolves to a set of addresses, at least one of which must
be the original address.
--
Viktor.
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