Re: Configuring sendmail relay behind the firewall

From: SamuraiMark (chopchop_at_127.0.0.1)
Date: 10/26/03 

Date: Sun, 26 Oct 2003 14:09:00 -0000

On 2003-10-26, SamuraiMark <chopchop@127.0.0.1> wrote:
>
> That is a message which I sent to mark@gangwarily.ca from a machine at
> work. Obviously sendmail *tried* to forward it to markd@kingston.net but
> was rejected with user unknown. That is the problem I am trying to
> solve.

Look's like the problem is closer to home. Here is part of the bounce
message from the test message I sent:

The original message was received at Sun, 26 Oct 2003 08:22:48 -0500
(EST)
from [199.246.2.158]

   ----- The following addresses had permanent fatal errors -----
<mark@gangwarily.ca>

   ----- Transcript of session follows -----
554 5.0.0 MX list for gangwarily.ca. points back to
rusty.gangwarily.ca
554 5.3.5 Local configuration error

I don't really understand this. *Inside* my network, rusty *is* the
MX. But so what? sendmail should be forwarding the email per the
aliases file. This is the same setup I have on ssi.stantive.com and it
works fine. The only differance I can see is the actual MX spec in
DNS:

mark@tess mark $ nslookup
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup
with
the `-sil[ent]' option to prevent this message from appearing.
> set q=mx
> stantive.com
Server: 10.171.93.101
Address: 10.171.93.101#53

Non-authoritative answer:
stantive.com mail exchanger = 20 stantive.com.
stantive.com mail exchanger = 30 helios.kos.net.

Authoritative answers can be found from:
stantive.com nameserver = helios.kos.net.
stantive.com nameserver = mercury.kosone.com.
stantive.com internet address = 199.246.2.158
helios.kos.net internet address = 64.201.45.11
mercury.kosone.com internet address = 199.246.2.125
> gangwarily.ca
Server: 10.171.93.101
Address: 10.171.93.101#53

gangwarily.ca mail exchanger = 10 rusty.gangwarily.ca.

Keep in mind that the answer for gangwarily.ca is coming from my
internal DNS. 

-- 
Mark E. Drummond
www.gangwarily.ca

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