Thanks to those who suggested fixes for my sendmail problem. What I have
done so far is to allow icmp from anywhere to my mail server, based on
one of your responses indicating that some mailers attempt to ping a host
before sending mail to it. I do allow connections from anywhere to port
25 on our mail server, which is an HP 755 running HP-UX 9.05 with the
latest sendmail patch from HP. However, this has not fixed the problem
of certain sites not being able to send mail to esygvl.com. Please take
a look at the msg below and tell me if I need to allow connections to
ports above 5000 (I didn't realize they went up to 37755!). Am I reading
the msg wrong? We were under the impression that ports above 5000 were
dangerous, so we disallowed them.
Terry L. Robison | I struggled no more, but the agony of my soul
Engineer | found vent in one loud, long, and final scream
E-Systems, Inc. | of despair. I felt that I tottered upon the brink...
Greenville TX | -= from "The Pit and the Pendulum" =-
tlr1 @
esygvl .
com | -= by E. A. Poe =-
---------- Forwarded message ----------
Date: Fri Jun 30 09:52:00 1995
From: Terry Robison <tlr1 @
chop .
isca .
uiowa .
edu>
To: tlr1 @
reo .
icf .
esygvl .
com
Cc: blj1 @
reo .
icf .
esygvl .
com, lbj1 @
reo .
icf .
esygvl .
com
Subject: Brian Sandlin sendmail not delivering to you
Am I reading this right? Why is the port number not 25?
Forwarded Information:
>From: Brian Sandlin (bsandlin @
bermac .
com) on Wed, 28 Jun 1995 13:51:38 -0500
To: tlr1 @
chop .
isca .
uiowa .
edu
Subject: sendmail not delivering to you
Hey,
Sorry if you're being swamped with information, but here is what I
am seeing:
I tried to send you some mail, while running a packet sniffer on the
wire, and got basically this: I send a packet to the smtp port at
reo.icf.esygvl.com, and get no response. I send another packet every
3-6 seconds and never get a response... I saw no evidence of a ping
attempt.
10 0.21973 twinkie -> reo.icf.esygvl.com SMTP C port=37755
11 2.85049 twinkie -> reo.icf.esygvl.com SMTP C port=37755
12 5.72021 twinkie -> reo.icf.esygvl.com SMTP C port=37755
Basically, the message will sit in queue for a few days and
then bounce.
NAA07424 138 Wed Jun 28 13:19 bsandlin
(Deferred: Connection timed out during initial connection wit)
tlr1 @
esygvl .
com
Maybe there is a DNS problem: here is the record I get for
esygvl.com and reo.icf.esygvl.com:
# nslookup
> set type=any
> esygvl.com
Server: ns2.psi.net
Address: 38.8.50.2
esygvl.com nameserver = ns.psi.net
esygvl.com nameserver = ns2.psi.net
esygvl.com nameserver = reo.icf.esygvl.com
esygvl.com
origin = reo.icf.esygvl.com
mail addr = postmaster.esygvl.com
serial = 199494209
refresh = 300 (5 mins)
retry = 7200 (2 hours)
expire = 604800 (7 days)
minimum ttl = 86400 (1 day)
esygvl.com internet address = 199.249.247.4
esygvl.com preference = 10, mail exchanger = reo.icf.esygvl.com
esygvl.com nameserver = ns.psi.net
esygvl.com nameserver = ns2.psi.net
esygvl.com nameserver = reo.icf.esygvl.com
ns.psi.net internet address = 192.33.4.10
ns2.psi.net internet address = 38.8.50.2
reo.icf.esygvl.com internet address = 199.249.247.4
> reo.icf.esygvl.com
Server: ns2.psi.net
Address: 38.8.50.2
Non-authoritative answer:
reo.icf.esygvl.com internet address = 199.249.247.4
Authoritative answers can be found from:
icf.esygvl.com nameserver = reo.icf.esygvl.com
icf.esygvl.com nameserver = ns.psi.net
icf.esygvl.com nameserver = ns2.psi.net
reo.icf.esygvl.com internet address = 199.249.247.4
ns.psi.net internet address = 192.33.4.10
ns2.psi.net internet address = 38.8.50.2
>
-b-
I'm sorry to see you having trouble and would be glad to help out
any way I can.
Brian Sandlin (bsandlin @
bermac .
com, postmaster @
bermac .
com)
(214) 255-9007 x110
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