Help - Sendmail Server

 
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Operating Systems Linux Red Hat Help - Sendmail Server
# 1  
Old 01-29-2010
Help - Sendmail Server

Hi guys,



Recently i setting new Sendmail server and hosting 1 domain. And i got problem with sending mail and return with another domain as extention domain. For more detail this is what i setting in server :


Code:
# /etc/hosts

127.0.0.1    localhost.localdomain   locahost

Code:
# /etc/resolv.conf
nameserver 165.21.83.88
nameserver 165.21.100.88


Code:
#/etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=yes
HOSTNAME=mail.jcmetal.com.sg


Code:
#hostname 
S3Server


I test sending mail to any domain was no problem. Then suddently issue happen
when my user sending mail with wrong email address format, my user type below format in "To:" as rcpt :

<'forex@agf.com.sg'>


then email bounce back as below :

Code:
Final-Recipient: RFC822; 'forex@agf.com'.inovuus.com
Action: failed
Status: 5.1.2
Remote-MTA: DNS; agf.com'.inovuus.com
Last-Attempt-Date: Fri, 29 Jan 2010 22:58:29 +0800

Return-Path: <test@enterprisesg.com>
Received: from enterprisesg.com (localhost.localdomain [127.0.0.1])
    by s3.inovuus.com (8.13.8/8.13.8) with ESMTP id o0TEwN5G026571
    for <'forex@agf.com'>; Fri, 29 Jan 2010 22:58:28 +0800
From: "test" <test@enterprisesg.com>
To: <'forex@agf.com'.inovuus.com>
Subject: test
Date: Fri, 29 Jan 2010 22:58:23 +0800
Message-Id: <20100129145802.M93935@enterprisesg.com>
X-Mailer: OpenWebMail 2.53
X-OriginatingIP: 125.163.176.50 (test)
MIME-Version: 1.0
Content-Type: text/plain; 


My issue is why email bounce back was added another extention domain which not host in my server.

 'forex@agf.com'.inovuus.com


Inovuus.com was not host in my server.



Btw, My domain DNS is not in my server but host in our datacenter DNS Server. So my server only run Sendmail Mailserver.

i will appriciated if any one in here can help me and give me solution, where is the setting in sendmail to fixed this issue ?



Thanks
Denny

Last edited by pludi; 01-29-2010 at 04:18 PM.. Reason: code tags, please...
# 2  
Old 01-30-2010
Java

Hi oceanserv,

You may have to check to ensure what DNS servers are being used by yourself (organization)

Your server name stated by you is

Code:
#hostname
S3Server

However the address below is linked to the below addess range when using nslookup.

<'forex@agf.com.sg'>

186.133.157.202.in-addr.arpa name = S5.inovuus.com.


The DNS servers may be pointing to S5.inovuus.com domain & including your mailserver S3Server.


I hope this is of help, or useful pointer.

Jnike
# 3  
Old 01-30-2010
Hi 1jnike,


Actually i also dont know if my server was used as backup server. Since i new admin and new for sendmail server.

recently i check, previous admin was make subdomain s1-s5.inovuus.com
double check again i found new information:

s5.inovuus.com was used as PTR RECORD for rcpt server also as their hostname.


At my server i setup s3server as hostname. also i recently found if my server ptr record is s3.inovuus.com.


It could be this is the problem ?



And how i have to resolved this issue ? should i used domain that was host in my server as PTR Record and Also for hostname ?


Need your help, cause i'm very confused with DNS, since DNs was not handle by me but all domain was hosted at Datacenter DNS.
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