Date: Wed, 05 Dec 2001 09:58:57 -0800 From: Dave Atkins <dave@atkinshome.com> To: freebsd-questions@freebsd.org Subject: sendmail times out connecting to local mailserver Message-ID: <3C0E6061.2696961E@atkinshome.com>
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I have a freeBSD box in our datacenter with a bunch of Windows servers. When I attempt to send an email, it times out when attempting to deliver to our local mailserver. If I attempt to send to an address outside our network, it works...but very slowly. There is a 10-15 second delay before the message is accepted for delivery. In the case of our local mailserver, it just times out. I suspect DNS issues are causing trouble. The mail server for our domain is on the same private subnet as the freeBSD box and technically, it is crmail.crdc.consumerreview.org. The freebsd box is marketplace.crdc.consumerreview.org. Both have 192.168.1.* addresses. When I send mail to datkins@consumerreview.com, it attempts to connect to mail.consumerreview.com (the external address for the crmail server) and times out. I can telnet on port 25 to the internal ip address of this server and successfuly cause an email to be received. I have attempted using a hosts file to point mail.consumerreview.com to the 192.168.1.* address of crmail, but it does not help. I have updated our internal DNS servers and verified that the linux box has forward and reverse dns entries and when I do a ping -a from the mail server to the ip address of the freebsd box, it resolves correctly. Does this sound familiar to anyone? I accessed the mail server log for an external server and observe this behavior when I do: #/usr/sbin/sendmail -v dave@atkinshome.com results in: Dec 4 16:50:07 kekaha sendmail[28737]: QAA28737: from=<datkins@marketplace.crdc.consumerreview.org>, size=412, class=0, pri=30412, nrcpts=1, msgid=<200112042346.fB4NkP531202@marketplace.crdc.consumerreview.org>, proto=ESMTP, relay=64.124.36.114.available.above.net [64.124.36.114] (may be forged) Dec 4 16:50:07 kekaha sendmail[28738]: QAA28737: to=<dave@atkinshome.com>, dela y=00:00:01, xdelay=00:00:00, mailer=local, stat=Sent However, if I attempt a #/usr/sbin/sendmail -v datkins@consumerreview.com it just times out The "may be forged" is due to the fact that the external, NAT'd address of the marketplace server reverse resolves to 64.124.36.114.available.above.net. But this should not cause a 10-15 second delay, should it? As for the internal delivery, maybe I need to create an MX record, not just a hosts file entry, in my local DNS, to help sendmail know to connect directly to the 192.168.1.x address of crmail, instead of the 64...x address, which involves a trip out through the alteon switch and PIX firewall and back in...which is not allowed. But I should be able to use a hosts file. Any help would be great! Thanks, P.S. I have also tried using the crmail server as a relay--can't get that to work either. I can use my mailserver at mail.atkinshome.com as a relay--but still have that 10-15 second delay which is a problem. ------------------------------------------------------------ Dave Atkins Director, Engineering ConsumerReview, Inc. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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