POSTFIX: New mail server. Can neither send nor receive mail
Looking at the /var/sys/syslog there were mysql access denied errors for the postfix db. One of the files within /etc/postfix/sql/ had a typo in the postfix password.
I can now receive mail without issues, however outgoing mail doesn't work. As the issue now differs from it initially was I am answering this so a new post can be created more specific to the current failures.