mailman

[David Southwell]

I am having problems getting /data/virtual-mailman.db created. Here are the 
errors I am getting from maillog:
 
Apr 17 05:09:23 dns1 postfix/master[687]: reload 
configuration /usr/local/etc/postfix
Apr 17 05:09:34 dns1 postfix/cleanup[3738]: fatal: open 
database /usr/local/mailman/data/virtual-mailman.db: No such file or 
directory
Apr 17 05:09:35 dns1 postfix/master[687]: warning: 
process /usr/local/libexec/postfix/cleanup pid 3738 exit status 1
Apr 17 05:09:35 dns1 postfix/master[687]: 
warning: /usr/local/libexec/postfix/cleanup: bad command startup -- 
throttling
Apr 17 05:09:52 dns1 postfix/smtpd[3739]: fatal: open 
database /usr/local/mailman/data/virtual-mailman.db: No such file or 
directory
Apr 17 05:09:53 dns1 postfix/master[687]: warning: 
process /usr/local/libexec/postfix/smtpd pid 3739 exit status 1
Apr 17 05:09:53 dns1 postfix/master[687]: 
warning: /usr/local/libexec/postfix/smtpd: bad command startup -- throttling


Could anyone please tell me what I need to check, the process by which 
virtual-mailman.db is created. If possible an example from the relevant 
config files would be really appreciated.

Thanks in advance
David