Scott Silva wrote on Thu, 20 Nov 2008 16:03:04 -0800:
CentOS 4 comes with a very OLD version of dovecot. If you are using dovecot, you can get a much newer version at atrpms.net. The upgrade might be all you need to fix it.
The dovecot in CentOS 5 exhibits the same problem when hammered by dictionary attacks. Is the atrpms version newer?
Kai