From: (no name) (no email)
Date: Fri Feb 27 2004 - 10:58:37 EST
On Fri, 27 Feb 2004, Wietse Venema wrote:
> You are running a local DNS server? Postfix < 2.0 will do a DNS
> lookup for each RCPT TO command (required by RFC to replace
> aliases by official hostnames).
>
I forgot about the canonicalization delay in Postfix 1.x, that is a very
likely explanation for the problem. With a local cache, the data will
already be in the cache because of the preceding MX lookup, but given a
remote DNS cache with a lossy network path to the cache, the above may be
plausible. The same issue can happen when the nexthop for a domain is
explicitly set in the transport table and is not equal to the destination
domain.
-- Viktor.
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