This how to activate postfix debugger on my centos 5.2

in main.cf

debugger_command =
         PATH=/bin:/usr/bin:/usr/local/bin;
         (strace -p $process_id 2>&1 | logger -p mail.info) & sleep 5

in master.cf

smtp      inet  n       -       n       -        -       smtpd     -D
# postfix reload
Share