when we change in transport file and reload the file then postfix not starting. maillog:- Dec 7 15:54:37 mailxf2RelayServer postfix-out/postfix-script: fatal: Postfix integrity check failed! Dec 7 16:05:10 mailxf2RelayServer postfix-out/postfix-script: fatal: the Postfix mail system is not running Dec 7 16:05:10 mailxf2RelayServer postfix-out/postsuper[21423]: fatal: scan_dir_push: open directory bounce/A/A: Not a directory Dec 7 16:05:11 mailxf2RelayServer postfix-out/postfix-script: fatal: Postfix integrity check failed! [brijesh@mailxf2RelayServer ~]$ sol:- rm -r /var/spool/postfix-out/bounce/A /etc/init.d/postfix-out start