SMTP server OFFLINE

I have just installed ISPConfig 3 on ubuntuserver 10.10
I followed the installation guide and everything seems to work fine exept the SMTP server who is offline.
I have tried to restart the whole server several times, but still the smtp server is offline

How do I proceed to solve the problem?

 

Any errors in your mail log (/var/log/mail.log)?

 

There is a bunch of errors.
As I understand, the problem is in postfix.
At first I reconfigured postfix and the smtp server goes ONLINE.
But I can't send or receive messages.

In the mail err-log I can read:

Nov 6 14:14:17 ubuntuisp postfix/trivial-rewrite[967]: fatal: open database /etc/postfix/virtual.db: Invalid argument
Nov 6 14:14:17 ubuntuisp postfix/cleanup[968]: fatal: open database /etc/postfix/virtual.db: Invalid argument
Nov 6 14:14:18 ubuntuisp postfix/smtpd[969]: fatal: open database /etc/postfix/virtual.db: Invalid argument

How do I proceed?

 

Yes, I have solved the problem.
I wrote the line.

domain.com smtp:[10.10.1.50]

in the file transport and regenerated the new databasefile transport.db with the command:

# postmap /etc/postfix/transport

and then there were no errors in the Mail err-Log

My next problem is that I can't receive any messages just send

 

Please check your mail log again. Also make sure that the MX record of your domain points to the correct server. You can check that with

Code:

dig mx yourdomain.com

 

There are no error posts in the error log no longer.
The mx pointer points to the mailserver

 

What about the mail log?