From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: To: 9fans@cse.psu.edu From: "greg scott" Date: Mon, 2 Jan 2006 19:50:24 -0600 MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Subject: [9fans] smtp dns failure: mx lookup Topicbox-Message-UUID: cdc37732-ead0-11e9-9d60-3106f5b1d025 trying to send mail (Post tag in acme mail) results in this /sys/log/smtp.fail entry dns: dns failure (net!smtp.comcast.net) the logs below from /sys/log/dns indicate that sending mail results in an MX type query (smtp.comcast.net mx) which fails with "dns failure 25". as a workaround to this send failure: if "ip/ping smtp.comcast.net" is run first, mail does get sent immediately, with no smtp.fail log. this is good for 10 minutes, after which a new ping is needed in order for new mail to be sent. failed ("stuck") mail is sent out too after a successful send due to the ping. ip/ping results in an IP type query (smtp.comcast.net ip) which succeeds, with dns returning ip addresses for smtp.comcast.net 192.168.0.1 is a router/firewall that forwards dns lookup requests to comcast dns servers. any ideas how to fix this? /sys/log/dns details: sending mail (acme Post tag) results in this mx query: 192.168.0.104 Jan 2 21:18:44 Twalk tag 15 fid 116 newfid 318 nwname 1 0:dns 192.168.0.104 Jan 2 21:18:44 Rwalk tag 15 nwqid 1 0:(0000000000000001 72 ) 22 192.168.0.104 Jan 2 21:18:44 Topen tag 15 fid 318 mode 2 192.168.0.104 Jan 2 21:18:44 Ropen tag 15 qid (0000000000000001 72 ) iounit 0 24 192.168.0.104 Jan 2 21:18:44 Twrite tag 15 fid 318 offset 0 count 19 'smtp.comcast.net mx' 192.168.0.104 Jan 2 21:18:44 dnresolve1 smtp.comcast.net 15 1 192.168.0.104 Jan 2 21:18:44 641.1: sending to 192.168.0.1/local#dns#server0 smtp.comcast.net mx 192.168.0.104 Jan 2 21:18:44 641: rcvd 192.168.0.1 flags: rd ra 192.168.0.104 Jan 2 21:18:44 641: rcvd 192.168.0.1 qd smtp.comcast.net 192.168.0.104 Jan 2 21:18:44 641: rcvd 192.168.0.1 ns comcast.net soa dns01.jdc01.pa.comcast.net dnsadmin.comcast.net 1428 900 180 604800 3600 192.168.0.104 Jan 2 21:18:44 dnresolve1 smtp.comcast.net 5 1 192.168.0.104 Jan 2 21:18:44 641.1: sending to 192.168.0.1/local#dns#server0 smtp.comcast.net cname 192.168.0.104 Jan 2 21:18:44 641: rcvd 192.168.0.1 flags: rd ra 192.168.0.104 Jan 2 21:18:44 641: rcvd 192.168.0.1 qd smtp.comcast.net 192.168.0.104 Jan 2 21:18:44 641: rcvd 192.168.0.1 ns comcast.net soa dns01.jdc01.pa.comcast.net dnsadmin.comcast.net 1428 900 180 604800 3600 192.168.0.104 Jan 2 21:18:44 Rerror tag 15 ename dns: dns failure 25 192.168.0.104 Jan 2 21:18:44 Tclunk tag 15 fid 318 192.168.0.104 Jan 2 21:18:44 Rclunk tag 15 7 -------- "ip/ping smtp.comcast.net" results in this ip query: 192.168.0.104 Jan 2 21:20:25 Twalk tag 15 fid 166 newfid 295 nwname 1 0:dns 192.168.0.104 Jan 2 21:20:25 Rwalk tag 15 nwqid 1 0:(0000000000000001 74 ) 22 192.168.0.104 Jan 2 21:20:25 Topen tag 15 fid 295 mode 2 192.168.0.104 Jan 2 21:20:25 Ropen tag 15 qid (0000000000000001 74 ) iounit 0 24 192.168.0.104 Jan 2 21:20:25 Twrite tag 15 fid 295 offset 0 count 20 '!smtp.comcast.net ip' 192.168.0.104 Jan 2 21:20:25 dnresolve1 smtp.comcast.net 1 1 192.168.0.104 Jan 2 21:20:25 655.1: sending to 192.168.0.1/local#dns#server0 smtp.comcast.net ip 192.168.0.104 Jan 2 21:20:25 655: rcvd 192.168.0.1 flags: rd ra 192.168.0.104 Jan 2 21:20:25 655: rcvd 192.168.0.1 qd smtp.comcast.net 192.168.0.104 Jan 2 21:20:25 655: rcvd 192.168.0.1 an smtp.comcast.net ip 63.240.76.27 192.168.0.104 Jan 2 21:20:25 655: rcvd 192.168.0.1 an smtp.comcast.net ip 63.240.77.77 192.168.0.104 Jan 2 21:20:25 655: rcvd 192.168.0.1 an smtp.comcast.net ip 204.127.198.27 192.168.0.104 Jan 2 21:20:25 655: rcvd 192.168.0.1 an smtp.comcast.net ip 204.127.202.27 192.168.0.104 Jan 2 21:20:25 655: rcvd 192.168.0.1 an smtp.comcast.net ip 216.148.227.125 192.168.0.104 Jan 2 21:20:25 655: rcvd 192.168.0.1 an smtp.comcast.net ip 216.148.227.147 192.168.0.104 Jan 2 21:20:25 Rwrite tag 15 count 20 11 192.168.0.104 Jan 2 21:20:25 Tread tag 15 fid 295 offset 0 count 1022 192.168.0.104 Jan 2 21:20:25 Rread tag 15 count 39 'dom=smtp.comcast.net ip=216.148.227.147' 50 192.168.0.104 Jan 2 21:20:25 Tread tag 15 fid 295 offset 39 count 1022 192.168.0.104 Jan 2 21:20:25 Rread tag 15 count 38 'dom=smtp.comcast.net ip=204.127.202.27' 49 192.168.0.104 Jan 2 21:20:25 Tread tag 15 fid 295 offset 77 count 1022 192.168.0.104 Jan 2 21:20:25 Rread tag 15 count 38 'dom=smtp.comcast.net ip=204.127.198.27' 49 192.168.0.104 Jan 2 21:20:25 Tread tag 15 fid 295 offset 115 count 1022 192.168.0.104 Jan 2 21:20:25 Rread tag 15 count 36 'dom=smtp.comcast.net ip=63.240.77.77' 47 192.168.0.104 Jan 2 21:20:25 Tread tag 15 fid 295 offset 151 count 1022 192.168.0.104 Jan 2 21:20:25 Rread tag 15 count 36 'dom=smtp.comcast.net ip=63.240.76.27' 47 192.168.0.104 Jan 2 21:20:25 Tread tag 15 fid 295 offset 187 count 1022 192.168.0.104 Jan 2 21:20:25 Rread tag 15 count 39 'dom=smtp.comcast.net ip=216.148.227.125' 50 192.168.0.104 Jan 2 21:20:25 Tread tag 15 fid 295 offset 226 count 1022 192.168.0.104 Jan 2 21:20:25 Rread tag 15 count 0 11 192.168.0.104 Jan 2 21:20:25 Tclunk tag 15 fid 295 192.168.0.104 Jan 2 21:20:25 Rclunk tag 15 7