Ok, well things seem to be working. I'm not sure what I did; however, I will show what I did just recently and I did find an error that I did in one of the steps from the upgrade instructions.
1) went back and changed the permissions as follows for ./maildrop directory (drwxrw-rw-)
2) after reading some of the files in the ./maildrop direrctory using postcat, i saw several errors, so I deleted those files
3) then I went back and reviewed the steps in the upgrade instructions and found in the /etc/postfix/mysql/sender_bcc_maps_domain.cf I misspelled active at the end of the line. I was getting several error messages in the ./maildrop directory pertaining to this file so I relooked at it and found the error.
4) I restarted postfix and wallah everything is pleasant again.
So I still would like to see what the actual /var/spool/postfix permissions and owner:group is and also the contents from a actual fresh or unmodified installation of iRedMail. Just so I have everything correct.
Thanks
I really hope my issue helps someone out there.