[Proftpd-user] User permission and group permissions

I run proftpd using mysql as my authentication method.  So each of my users
DOES NOT have a linux account on the box. I will call them virtual users. I
have read over the docs to sort out how to configure things but I am
running into users being able to login but not allowed to upload files.  It
does the upload,using the temporary file, but when it goes to finish the
upload and rename the file to the right name it gives me a permissions
error.

In the mysql table ftpuser  column uid is null, and column gid is "2000"
for every user (which is the gid of the linux group "foundry" on the
server). Table ftpgroup has (foundry, 2000, www-data) for its data.

In proftpd.conf the User is "www-data" and the Group is "foundry"

Proftpd.service has the service running under user=root and group=foundry

The file structure has all files and dir set with user=www-data and
group=foundry and the perms are  775.

So I am struggling with the user/group setup of proftpd to reliably access
this file system.  Each user in the mysql table, all have the same
permissions, they  are chrooted to their specific home directories via the
homedir column.

I don't think this is a bug, I think it is a config error.  I have tried
the logs but they are no help.  It doesn't seem to put any comment in the
logs about the permissions error.  My log settings are:

athAllowFilter [[:print:]]
SyslogLevel     debug
SystemLog       /mnt/ramdisk/proftp/system.log
#ExtendedLog   /mnt/foundry/logs/proftpd/paranoid_log  ALL default
TransferLog   /mnt/ramdisk/proftp/xferlog.log

thanks for taking the  time to look this over. I am hoping it is a simple
fix.

Brad

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