Re: Split Sendmail Config

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On Tue, 2007-03-13 at 12:48 +0000, Jonathan Allen wrote:
> Jim van Wel wrote:
> > 
> > You should get an error back. So what's the error?
> 
> No error, it never leaves the queue.  It just sits there complaining
> about a read error.  Standard "warning 4 hours" and then "error 5 days"
> messages from sendmail on our mailhost.
> 
> If I switch over for ten minutes to our ISP's smarthost then it's
> gone in just a few seconds and charter.net accept delivery from them.
> 
> If I try to connect to their SMTP port by hand:
> 
>    mirror!~ % telnet charter.net 25
>    Trying 64.192.190.12...
>    telnet: connect to address 64.192.190.12: Connection refused
>    telnet: Unable to connect to remote host: Connection refused
> 
> So I think it's an IP address based thing at their end.
> 

That address doesn't have an SMTP server listening. For mail delivery,
the DNS MX (Mail eXchanger) record is used. a "dig mx charter.net" gives
me the following:

[mfleming@defender mail]$ dig mx charter.net

; <<>> DiG 9.3.4 <<>> mx charter.net
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52277
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 3

;; QUESTION SECTION:
;charter.net.                   IN      MX

;; ANSWER SECTION:
charter.net.            75909   IN      MX      10 mail.charter.net.

;; AUTHORITY SECTION:
charter.net.            162311  IN      NS      auth0.ns.charter.net.
charter.net.            162311  IN      NS      auth1.ns.charter.net.

;; ADDITIONAL SECTION:
mail.charter.net.       75909   IN      A       209.225.8.224
auth0.ns.charter.net.   162309  IN      A       209.225.8.42
auth1.ns.charter.net.   162309  IN      A       24.240.141.241

;; Query time: 24 msec
;; SERVER: 10.0.4.35#53(10.0.4.35)
;; WHEN: Tue Mar 13 22:57:23 2007
;; MSG SIZE  rcvd: 141

....connecting to port 25 (smtp) on the "mail.charter.net" address gives
me the following:

[mfleming@defender mail]$ telnet mail.charter.net 25
Trying 209.225.8.224...
Connected to mail.charter.net (209.225.8.224).
Escape character is '^]'.
220 charter.net ESMTP server ready Tue, 13 Mar 2007 09:00:41 -0400

Your mileage may vary, but the 209.225.8.224 IP is the one you really
want to talk to.

> Jonathan

Michael.


-- 
Michael Fleming <mfleming@xxxxxxxxxxxxxxxx> in Brisbane, Australia
"Be master of your mind, not mastered by mind"


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