Sendmail MX record problem

hiteshdarji · 03-03-2010, 07:19 AM

we have use sendmail for sending the mail purpose in suse linux now we have face the problem in outside domain to our domain(irma.ac.in) mail receving problem it get error like
Sorry, I couldn't find a mail exchanger or IP address.
> (#5.4.4)

and bounce the mail with failure Notice

please help us in regarding this problem

Regards

Hitesh Darji

smoker · 03-03-2010, 07:53 AM

Have you set up your mx in your DNS ? Where-ever your main DNS records are for your domain name, you have to have an mx record as well.

Do you have your own DNS server or are you using someone elses ?

Examples here:
http://www.cadetech.co.uk/Web_Design...mation/DNS.asp

hiteshdarji · 03-03-2010, 10:06 PM

We have use our own DNS server and MX record entry already there but problem is not resolved yet

Hitesh Darji

smoker · 03-04-2010, 06:11 AM

Well your DNS server is not visible to the outside world then.

Quote:

[user@localhost ~]$ dig irma.ac.in

; <<>> DiG 9.6.1-P1-RedHat-9.6.1-11.P1.fc12 <<>> irma.ac.in
;; global options: +cmd
;; connection timed out; no servers could be reached

[user@localhost ~]$ nslookup irma.ac.in
;; connection timed out; no servers could be reached

[user@localhost ~]$

hiteshdarji · 03-04-2010, 10:55 PM

when we search dig utility from the internet it is working ok

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2 <<>> irma.ac.in
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45118
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;irma.ac.in. IN A

;; ANSWER SECTION:
irma.ac.in. 172800 IN A 202.129.240.201

;; AUTHORITY SECTION:
irma.ac.in. 172800 IN NS intranet2.irma.ac.in.

;; Query time: 284 msec
;; SERVER: 64.94.1.33#53(64.94.1.33)
;; WHEN: Thu Mar 4 23:52:14 2010
;; MSG SIZE rcvd: 68

so which method you can check so please tell me any suggestion

Regards,

Hitesh Darji

smoker · 03-05-2010, 07:38 AM

Code:

[smoker@kids ~]$ mail -v -s "test" anybody@irma.ac.in
hello world
Cc: anybody@irma.ac.in... Connecting to [127.0.0.1] via relay...
220 kids.headru.sh ESMTP Sendmail 8.13.7/8.13.7; Fri, 5 Mar 2010 13:30:59 GMT
>>> EHLO kids.headru.sh
250-kids.headru.sh Hello localhost.localdomain [127.0.0.1], pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-AUTH DIGEST-MD5 CRAM-MD5
250-DELIVERBY
250 HELP
>>> MAIL From:<smoker@kids.headru.sh> SIZE=50 AUTH=smoker@kids.headru.sh
250 2.1.0 <smoker@kids.headru.sh>... Sender ok
>>> RCPT To:<anybody@irma.ac.in>
>>> DATA
250 2.1.5 <anybody@irma.ac.in>... Recipient ok
354 Enter mail, end with "." on a line by itself
>>> .
250 2.0.0 o25DUx6a010706 Message accepted for delivery
anybody@irma.ac.in... Sent (o25DUx6a010706 Message accepted for delivery)
Closing connection to [127.0.0.1]
>>> QUIT
221 2.0.0 kids.headru.sh closing connection
[smoker@kids ~]$

Code:

From MAILER-DAEMON@kids.headru.sh  Fri Mar  5 13:31:06 2010
Date: Fri, 5 Mar 2010 13:31:06 GMT
From: Mail Delivery Subsystem <MAILER-DAEMON@kids.headru.sh>
To: <smoker@kids.headru.sh>
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
        boundary="o25DV66a010708.1267795866/kids.headru.sh"
Subject: Returned mail: see transcript for details
Auto-Submitted: auto-generated (failure)

This is a MIME-encapsulated message

--o25DV66a010708.1267795866/kids.headru.sh

The original message was received at Fri, 5 Mar 2010 13:30:59 GMT
from localhost.localdomain [127.0.0.1]

   ----- The following addresses had permanent fatal errors -----
<anybody@irma.ac.in>
    (reason: 550 Address unknown)

   ----- Transcript of session follows -----
... while talking to mail2.irma.ac.in.:
>>> DATA
<<< 550 Address unknown
550 5.1.1 <anybody@irma.ac.in>... User unknown
451 4.4.1 reply: read error from mail2.irma.ac.in.

--o25DV66a010708.1267795866/kids.headru.sh
Content-Type: message/delivery-status

Reporting-MTA: dns; kids.headru.sh
Received-From-MTA: DNS; localhost.localdomain
Arrival-Date: Fri, 5 Mar 2010 13:30:59 GMT

Final-Recipient: RFC822; anybody@irma.ac.in
Action: failed
Status: 5.1.1
Remote-MTA: DNS; mail2.irma.ac.in
Diagnostic-Code: SMTP; 550 Address unknown
Last-Attempt-Date: Fri, 5 Mar 2010 13:31:05 GMT

--o25DV66a010708.1267795866/kids.headru.sh
Content-Type: message/rfc822

It's not dns, your mailserver rejected an unknown user.