Sub-domain 403 Forbidden

[Lippy]

I just randomly had a sub-domain that has been working for ages just start showing a 403 forbidden error. No changes have been made to any htaccess or permissions.

I have tried the following:

chmod -R user.nobody public_html
chmod -R user.user public_html
recompile apache with and without suexec
restarted apache and bind
checked httpd.conf and all is well

This is the only subdomain out of 25+ that are not working, and all domains on the server are fine other than this one. Any help would be appreciated.

[chirpy]

Have you checked the permissions on the subdomain subdirectory within the public_html directory? They ought to be 755 and your public_html ought to be 750.