[buro9]

Originally Posted by tamarian

The file should be also writable by the apache process. Use chmod 666

Paul also mentioned this might be due to restrictions of PHP access outside the HTML root.

You might want to try a sym link

ln -fs /home/example/mail/example.com/subscription_bounces/inbox /path/to/admincp/subscriber_notify

Now you should be able to use /path/to/admincp/subscriber_notify as the file location (also make it chmod 666

Let me know if this fixes the problem

The symlink didn't work. I set the permission for both the file and the link as 666. Diagnostics still failed.

I've also tried disabling the open_basedir setting for PHP within httpd.conf but that fails.

How much effort do you reckon for creating a PHP POP3 variant of this hack for those who have trouble reaching the spool file?