I am facing problem after installing the iRedmail. Please help.

https://example.org/postfixadmin/login.php
Connect: Access denied for user 'vmailadmin'@'localhost' (using password: YES)

I am posting 'postconf -n' output.

May 23 13:03:12 example postfix/cleanup[18473]: warning: 6F690708A9: virtual_alias_maps map lookup problem for anurag@gmail.com
May 23 13:03:12 example postfix/pickup[18099]: 6FCD6708A9: uid=500 from=<sheeladevimail>
May 23 13:03:12 example postfix/cleanup[18473]: warning: 6FCD6708A9: virtual_alias_maps map lookup problem for postmaster@example.org
May 23 13:03:12 example postfix/pickup[18099]: warning: 7004B708A9: message has been queued for 2 days
May 23 13:03:12 example postfix/pickup[18099]: 7004B708A9: uid=0 from=<root>
May 23 13:03:12 example postfix/cleanup[18473]: warning: 7004B708A9: virtual_alias_maps map lookup problem for www@example.org
May 23 13:03:12 example postfix/pickup[18099]: 703B7708A9: uid=0 from=<root>
May 23 13:03:12 example postfix/cleanup[18473]: 703B7708A9: message-id=<20100523130312.703B7708A9@example.org>
May 23 13:03:12 example postfix/cleanup[18473]: warning: 703B7708A9: virtual_alias_maps map lookup problem for root@example.org
May 23 13:03:12 example postfix/pickup[18099]: warning: 70751708A9: message has been queued for 2 days
May 23 13:03:12 example postfix/pickup[18099]: 70751708A9: uid=0 from=<root>
May 23 13:03:12 example postfix/cleanup[18473]: warning: 70751708A9: virtual_alias_maps map lookup problem for www@example.org
May 23 13:03:12 example postfix/pickup[18099]: warning: 70AEF708A9: message has been queued for 1 days
May 23 13:03:12 example postfix/pickup[18099]: 70AEF708A9: uid=0 from=<root>
May 23 13:03:12 example postfix/cleanup[18473]: 70AEF708A9: message-id=<20100523130312.70AEF708A9@example.org>
May 23 13:03:12 example postfix/cleanup[18473]: warning: 70AEF708A9: virtual_alias_maps map lookup problem for root@example.org
May 23 13:03:13 example postfix/smtpd[18013]: warning: problem talking to service rewrite: Success
May 23 13:03:13 example postfix/smtpd[18388]: warning: problem talking to service rewrite: Connection reset by peer
May 23 13:03:13 example postfix/master[3405]: warning: process /usr/libexec/postfix/trivial-rewrite pid 18567 exit status 1
May 23 13:03:13 example postfix/master[3405]: warning: /usr/libexec/postfix/trivial-rewrite: bad command startup -- throttling
May 23 13:03:13 example postfix/smtpd[18193]: warning: problem talking to service rewrite: Success
May 23 13:03:13 example postfix/smtpd[18088]: warning: problem talking to service rewrite: Connection reset by peer
May 23 13:03:13 example postfix/master[3405]: warning: process /usr/libexec/postfix/trivial-rewrite pid 18568 exit status 1
May 23 13:03:13 example postfix/smtpd[18194]: warning: problem talking to service rewrite: Connection reset by peer
May 23 13:03:13 example postfix/smtpd[18418]: warning: problem talking to service rewrite: Success
May 23 13:03:13 example postfix/master[3405]: warning: process /usr/libexec/postfix/trivial-rewrite pid 18569 exit status 1
May 23 13:03:13 example postfix/smtpd[18091]: warning: problem talking to service rewrite: Success
May 23 13:03:13 example postfix/smtpd[18018]: warning: problem talking to service rewrite: Connection reset by peer
May 23 13:03:13 example postfix/master[3405]: warning: process /usr/libexec/postfix/trivial-rewrite pid 18570 exit status 1
May 23 13:03:14 example postfix/trivial-rewrite[18571]: fatal: proxy:mysql:/etc/postfix/mysql_virtual_alias_maps.cf(0,lock|fold_fix): table lookup problem
May 23 13:03:15 example postfix/smtpd[18388]: warning: problem talking to service rewrite: Success
May 23 13:03:15 example postfix/smtpd[18013]: warning: problem talking to service rewrite: Connection reset by peer
May 23 13:03:15 example postfix/master[3405]: warning: process /usr/libexec/postfix/trivial-rewrite pid 18571 exit status 1
May 23 13:03:33 example postfix/pickup[18099]: 6AA28708A9: uid=0 from=<root>

I have taken two domains

1. Example.org - as my main SMTP mail server...
2. Example.net - second domain where I will creates user etc to send & receive mail for them.

Please help me on how should I troubleshoot & where to start for troubleshooting..

Rgds,