qpsmtpd-async weird ParaDNS lookup problem (14 messages)

I've been running qpsmtpd-async for years on all sorts of servers.

Likely I have something in DNS setup slightly wrong on a new server
I'm setting up + what's wrong escapes me.

The symptom is qpsmtpd-async hanging forever in the HELO sequence.

Both forkserver + prefork work fine + async works so much better,
I'd like to resolve this problem.

Here's an example of the problem...

Listen child making a Qpsmtpd::PollServer for 7.
11869 in config(plugins)
11869 config(plugins) returning (resolve_sender_host dont_require_anglebrackets rcpt_simple test@newswire.net chris@newswire.net doug@newswire.net support@newswire.net accounting@newswire.net
sales@newswire.net debrown@newswire.net maildir /cluster/clients/ivan-budimir %d/users/%l/Maildir) from cache
DNS failure looking for 127.0.0.1 after 0 secs (looked for 1, got 0)
11869 (connect) running plugin: resolve_sender_host
11869 (connect) resolve_sender_host: DEBUG: ip=127.0.0.1 host=localhost domain=localhost
11869 Plugin resolve_sender_host, hook connect returned DECLINED,
11869 in config(smtpgreeting)
11869 config(smtpgreeting) returning (Ready!) from cache

Notice this line emitted from ParaDNS...

DNS failure looking for 127.0.0.1 after 0 secs (looked for 1, got 0)

Bind looks good...

biz-net2# netstat -pluten | grep named
tcp 0 0 127.0.0.1:53 0.0.0.0:* LISTEN 105 6068 4715/named
tcp 0 0 127.0.0.1:953 0.0.0.0:* LISTEN 105 6073 4715/named
tcp6 0 0 ::1:53 :::* LISTEN 105 6070 4715/named
tcp6 0 0 ::1:953 :::* LISTEN 105 6074 4715/named
udp 0 0 127.0.0.1:53 0.0.0.0:* 105 6067 4715/named
udp6 0 0 ::1:53 :::* 105 6069 4715/named

And host seems to work too...

biz-net2# host localhost
localhost has address 127.0.0.1
localhost has IPv6 address ::1

biz-net2# host 127.0.0.1
1.0.0.127.in-addr.arpa domain name pointer localhost.

If I turn on ParaDNS debugging (export PARADNS_DEBUG=100) I just see the lookup fail again...

100/2 [17636] dns lookup: Trying to resolve A: 127.0.0.1
100/2 [17636] dns lookup: NS Query: 127.0.0.1 (60806)
DNS failure looking for 127.0.0.1 after 0 secs (looked for 1, got 0)

biz-net2# perl -MParaDNS -e 'print "$ParaDNS::VERSION\n"'
2.0

Anyone have any suggestions?