==== Provide required information to help troubleshoot and get quick answer ====
- iRedMail version:
- Linux/BSD distribution name and version:
- Any related log? Log is helpful for troubleshooting.
==== ==== Provide required information to help troubleshoot and get quick answer ====
- iRedMail version: 0.7.3
- Linux/BSD distribution name and version: CentOS 6.2 (64 bit)
- Any related log? Log is helpful for troubleshooting.
====

Thanks in advance for the help. We have a production server running iRedMail-0.7.3 version without any problems. We are moving this setup to a new server with better hardware. For this I installed CentOS 6.2 on the new server followed by the installation of same iRedMail-0.7.3 version on it. Migrated the user/passwords(OpenLDAP) and the mailboxes to the new server. But here is the problem if I send a mail from 'user@example.com' to external domains the mail is sent successfully. However the mail sent from external domains (eg: user@gmail.com) to 'user@example.com' gets bounced. Even mail from www@example.com'
to 'user@example.com' bounces. One thing to note is if I create a new user 'user1@example.com' through 'iRedAdmin interface' then mail destined towards this mailbox gets successfully delivered.

Please see the output of postfix maillog below
 
  May 13 22:20:16 mail2 postfix/smtpd[5068]: connect from mail2.example.com[127.0.0.1]
May 13 22:20:16 mail2 postfix/smtpd[5068]: 3D162BC047C: client=mail2.example.com[127.0.0.1], sasl_method=LOGIN, sasl_username=www@example.com
May 13 22:20:16 mail2 postfix/cleanup[5071]: 3D162BC047C: message-id=<9e0a30d7e18e42592bf0f065629064ea@example.com>
May 13 22:20:16 mail2 postfix/qmgr[4371]: 3D162BC047C: from=<www@example.com>, size=558, nrcpt=1 (queue active)
May 13 22:20:16 mail2 roundcube: User www@example.com [10.10.80.39]; Message for user@example.com; 250: 2.0.0 Ok: queued as 3D162BC047C
May 13 22:20:16 mail2 postfix/pipe[5072]: 3D162BC047C: to=<user@example.com>, relay=dovecot, delay=0.15, delays=0.1/0.01/0/0.04, dsn=5.1.1, status=bounced (user unknown)
May 13 22:20:16 mail2 postfix/cleanup[5071]: 5F09DBC047E: message-id=<20120513165016.5F09DBC047E@mail2.example.com>
May 13 22:20:16 mail2 postfix/bounce[5074]: 3D162BC047C: sender non-delivery notification: 5F09DBC047E
May 13 22:20:16 mail2 postfix/qmgr[4371]: 5F09DBC047E: from=<>, size=2365, nrcpt=1 (queue active)
May 13 22:20:16 mail2 postfix/qmgr[4371]: 3D162BC047C: removed
May 13 22:20:16 mail2 postfix/smtpd[5068]: disconnect from mail2.example.com[127.0.0.1]
May 13 22:20:16 mail2 postfix/pipe[5072]: 5F09DBC047E: to=<www@example.com>, relay=dovecot, delay=0.21, delays=0.02/0/0/0.19, dsn=2.0.0, status=sent (delivered via dovecot service)
May 13 22:20:16 mail2 postfix/qmgr[4371]: 5F09DBC047E: removed
 
 
 
  Current Production Server:
 
  iRedMail Version: 0.7.3
  Operating System: CentOS 5.6 (64 bit)
  Backend: OpenLDAP
 
  New Server:
 
  iRedMail Version: 0.7.3
  Operating System: CentOS 6.2 (64 bit)
  Backend: OpenLDAP

Please help me out.