I have another issue after I deleted the first site in the domain, the FTP server stopped properly authenticating users.
I rolled back my ISPConfig server to a previous snapshot I made before I deleted my site. The snapshot had the site intact. Then I simply did a redirect from the "first site" to the new site I am working on. After I applied the fix above I noticed that the FTP server went wacky on me.
To test, I created a brand new web site under the same customer in question, then a new FTP user.
I'm not able to authenticate an FTP session to any client, even those that previously worked. FTP is totally broken.
When I try to log in from a linux command line using the the 'ftp' client directly to the server (same local IP subnet) I get the following in the logs:
Dec 12 13:05:03 distance vsftpd: pam_unix(vsftpd:auth): check pass; user unknown
Dec 12 13:05:03 distance vsftpd: pam_unix(vsftpd:auth): authentication failure; logname= uid=0 euid=0 tty=ftp ruser=ftpuser10 rhost=126.96.36.199
Mon Dec 12 13:05:05 2011 [pid 1] [ftpuser10] FAIL LOGIN: Client "188.8.131.52"
I am continuing to research how to remedy this situation. Any comments are greatly appreciated.