<IfDefine HAVE_SMTPD_RBL> <IfModule !mod_smtpd_rbl.c> LoadModule smtpd_rbl_module extramodules/mod_smtpd_rbl.so </IfModule> </IfDefine> <IfModule mod_smtpd_rbl.c> # Define whitelist and blacklist chains for mod_smtpd_rbl #SmtpWhitelist mywhitelist #SmtpBlacklist myblacklist </IfModule>