> Oct 11 11:16:08 mail6 postfix/submission/smtpd[18091]: fatal: open lock file > pid/inet.submission: cannot open file: Permission denied
This would be the clue, and according to the docs, pid files are written to the queue directory by default. > queue_directory = /var/spool/postfix so - is there a directory /var/spool/postfix/pid and is it writeable by the postfix user? marty
