Hi all,
First of all i would like to share my regards to everyone in this community.This is my first post in the forum.

I have two machines one is opensuse machine running local dns server as well as mail server(postfix) and other machine centos acting as a client.
I have named the suse machine as 'suse1'(192.168.1.100) and centos machine as 'centos'(192.168.1.200) and both are in a local domain named 'dns.internal'.I have updated the host records in the dns configuration files.I am able to ping as well as to ssh into both of the machines.I am able to resolve both of the machine names.Now coming to my problem.The user root@suse1.dns.internal is able to receive mails from root@centos.dns.internal but the reversse is not happening that is the user root@centos.dns.internal is not able to receive mails from root@suse1.dns.internal

Mail Logs are as follows

@suse

Code:

Code:
 #tail /var/log/mail 
Sep 10 18:50:57 suse1 postfix/smtp[7341]: B36865D4118: to=<root@centos.dns.internal>, relay=centos.dns.internal[192.168.1.200]:25, delay=0.29, delays=0.17/0.01/0.04/0.07, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as DBA034183DD) 
Sep 10 18:50:57 suse1 postfix/qmgr[7232]: B36865D4118: removed 
Sep 10 18:50:58 suse1 postfix/smtpd[7344]: warning: database /etc/aliases.db is older than source file /etc/aliases 
Sep 10 18:50:58 suse1 postfix/smtpd[7344]: connect from centos.dns.internal[192.168.1.200] 
Sep 10 18:50:58 suse1 postfix/smtpd[7344]: 096BC5D410B: client=centos.dns.internal[192.168.1.200] 
Sep 10 18:50:58 suse1 postfix/cleanup[7337]: 096BC5D410B: message-id=<20090910133345.EEC444183DF@centos> 
Sep 10 18:50:58 suse1 postfix/qmgr[7232]: 096BC5D410B: from=<>, size=2551, nrcpt=1 (queue active) 
Sep 10 18:50:58 suse1 postfix/smtpd[7344]: disconnect from centos.dns.internal[192.168.1.200] 
Sep 10 18:50:58 suse1 postfix/smtp[7341]: 096BC5D410B: to=<guest@dns.internal>, relay=none, delay=0.05, delays=0.05/0/0/0, dsn=5.4.6, status=bounced (mail for dns.internal loops back to myself) 
Sep 10 18:50:58 suse1 postfix/qmgr[7232]: 096BC5D410B: removed
@centos

Code:

Code:
#tail /var/log/maillog 
Sep 10 19:03:45 centos postfix/cleanup[3637]: DBA034183DD: message-id=<20090910132057.GA7332@suse1.dns.internal> 
Sep 10 19:03:45 centos postfix/qmgr[2989]: DBA034183DD: from=<guest@dns.internal>, size=646, nrcpt=1 (queue active) 
Sep 10 19:03:45 centos postfix/smtpd[3634]: disconnect from suse1.dns.internal[192.168.1.100] 
Sep 10 19:03:45 centos postfix/smtp[3638]: DBA034183DD: to=<root@centos.dns.internal>, relay=none, delay=0.06, delays=0.04/0.02/0/0, dsn=5.4.6, status=bounced (mail for centos.dns.internal loops back to myself) 
Sep 10 19:03:45 centos postfix/cleanup[3637]: EEC444183DF: message-id=<20090910133345.EEC444183DF@centos> 
Sep 10 19:03:45 centos postfix/qmgr[2989]: EEC444183DF: from=<>, size=2364, nrcpt=1 (queue active) 
Sep 10 19:03:45 centos postfix/bounce[3640]: DBA034183DD: sender non-delivery notification: EEC444183DF 
Sep 10 19:03:45 centos postfix/qmgr[2989]: DBA034183DD: removed 
Sep 10 19:03:46 centos postfix/smtp[3638]: EEC444183DF: to=<guest@dns.internal>, relay=suse1.dns.internal[192.168.1.100]:25, delay=0.12, delays=0.01/0/0.04/0.06, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 096BC5D410B) 
Sep 10 19:03:46 centos postfix/qmgr[2989]: EEC444183DF: removed
Any ideas will be appreciated.Thanks in advance..

Cheers,
Fizeen