On 22 Aug 2002 at 18:28, Michael Scheidell wrote: > ----- Original Message ----- > From: ""Dan Langille"" <[EMAIL PROTECTED]> > Newsgroups: local.freebsd.hackers > Sent: Thursday, August 22, 2002 1:41 PM > Subject: why does this sendmail connection take so long? > > > > I'd normally attribute this problem to DNS, but I can't track down > > what DNS problem is occuring. Note the lag between the first event > > and the next. Any suggestions? > > might be identd (port 113)
After some testing, I'm inclined to think it's not ident. The network in question is behind a firewall which is doing NAT. Two boxes do not exibit the problem. Two do. All are FreeBSD 4.6-stable created from same source snapshot. I've tested this from several boxes behind my firewall each time emailing to a box outside the firewall. The test was: echo 'hi there' | mail [EMAIL PROTECTED] The two boxes which exibit the probem are the DNS server and the firewall. Mail sent from those boxes exhibit identical delays, namely a 75 second lag between the first and second event (see below for an example; note that I've changed the real domain to example.org). I'm not sure whether this indicates a problem on the sending or receiving end. I suspect sending. But what the problem is I'm not sure yet. I've been running "tcpdump -i lo0 port 53" to see if I could find anything suspect in there, but I didn't. BTW, what would I be looking for if the above delay is caused by DNS? Thanks. Aug 28 12:07:24 xeon sendmail[66323]: g7SG7O7G066323: from=dan, size=37, class=0, nrcpts=1, msgid=<[EMAIL PROTECTED]>, relay=dan@localhost Aug 28 12:08:39 xeon sm-mta[66507]: g7SG8dvj066507: from=<[EMAIL PROTECTED]>, size=351, class=0, nrcpts=1, msgid=<[EMAIL PROTECTED]>, proto=ESMTP, daemon=MTA, relay=localhost [127.0.0.1] Aug 28 12:08:40 xeon sendmail[66323]: g7SG7O7G066323: [EMAIL PROTECTED], ctladdr=dan (1000/1000), delay=00:01:16, xdelay=00:01:16, mailer=relay, pri=30028, relay=localhost.example.org. [127.0.0.1], dsn=2.0.0, stat=Sent (g7SG8dvj066507 Message accepted for delivery) Aug 28 12:08:42 xeon sm-mta[66509]: g7SG8dvj066507: to=<[EMAIL PROTECTED]>, ctladdr=<[EMAIL PROTECTED]> (1000/1000), delay=00:00:03, xdelay=00:00:02, mailer=esmtp, pri=30342, relay=m20.example.org. [216.187.106.227], dsn=2.0.0, stat=Sent (Ok: queued as 169F57A11) -- Dan Langille I'm looking for a computer job: http://www.freebsddiary.org/dan_langille.php To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message