MailScanner Deleting incoming spool directories

[Sarah Michaelson]

Hi all,

We have a client who has mailscanner installed on a number of cPanel
servers and it has been working great up until the last few weeks,
when on about 10 of his servers he started getting these errors in the
maillog:

Nov 12 21:49:12 paris MailScanner[1313]: Cannot cd to dir
/var/spool/exim_incoming/input/2 to read messages, No such file or
directory
Nov 12 21:49:12 paris MailScanner[1313]: Cannot cd to dir
/var/spool/exim_incoming/input/2 to read messages, No such file or
directory
Nov 12 21:49:12 paris MailScanner[1313]: Cannot cd to dir
/var/spool/exim_incoming/input/3 to read messages, No such file or
directory
Nov 12 21:49:12 paris MailScanner[1313]: Cannot cd to dir
/var/spool/exim_incoming/input/3 to read messages, No such file or
directory
Nov 12 21:49:12 paris MailScanner[1313]: Cannot cd to dir
/var/spool/exim_incoming/input/4 to read messages, No such file or
directory
Nov 12 21:49:12 paris MailScanner[1313]: Cannot cd to dir
/var/spool/exim_incoming/input/4 to read messages, No such file or
directory
Nov 12 21:49:12 paris MailScanner[1313]: Cannot cd to dir
/var/spool/exim_incoming/input/5 to read messages, No such file or
directory
Nov 12 21:49:12 paris MailScanner[1313]: Cannot cd to dir
/var/spool/exim_incoming/input/5 to read messages, No such file or
directory
Nov 12 21:49:12 paris MailScanner[1313]: Cannot cd to dir
/var/spool/exim_incoming/input/6 to read messages, No such file or
directory

What seems to be happening is that once MailScanner processes the mail
in the incoming queue, it starts deleting the empty spool directories.
I've tried uninstalling and reinstalling the latest stable version,
uninstalling and reinstalling the previous stable version (because he
said it seemed to start after an upgrade) and the problem still
occurs.

System information:

MailScanner v4.78.17 (tried version v4.77.10 and still had problem)
MTA is exim 4.69
CentOS 5.4
cPanel 11.25.0-C40255
8 GB RAM
8 CPUs

I would be very grateful for any suggestions of where to look or what
to try next to resolve this issue.

-- 
Regards,
Sarah Michaelson

Way to the Web Ltd
Server Management Services:
http://www.configserver.com