Known Issues
Spamdyke under el4 (CentOS4 and RHEL4) does not create dynamic executables, and is therefore in conflict with the stack protection in the ASL kernel. As such spamdyke is not supported under ASL in *ANY WAY*.
As a general recommendation, all RBL's should be implemented in spamdyke, and not through the plesk interface. This allows blacklisted hosts to still send mail using authentication