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 t...@newswire.net ch...@newswire.net d...@newswire.net supp...@newswire.net account...@newswire.net sa...@newswire.net debr...@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?
