This can be closed, this turned out to be a permissions problem. I had both Ubuntu and Centos mail servers, ubuntu wants the list files to have a group of "list", and Centos "smartlst". I had them NFS mounted across several servers. It was the different OS's fighting over what GID these files should be that caused the problem. I moved the last CentOS server to Ubuntu, set the group ID's to "list", and now everything is good. This bug can be closed.
This can be closed, this turned out to be a permissions problem. I had both Ubuntu and Centos mail servers, ubuntu wants the list files to have a group of "list", and Centos "smartlst". I had them NFS mounted across several servers. It was the different OS's fighting over what GID these files should be that caused the problem. I moved the last CentOS server to Ubuntu, set the group ID's to "list", and now everything is good. This bug can be closed.