These are some draft notes ….

To check if the system is correctly configured to send system emails try:

mail root
mail patrick


To check from Flowable you need to set up a workflow.

Postfix writes to the syslog. To extract all the postfix entries:

sudo cat /var/log/syslog | parse-log - postfix'


I think all the postfix programs (eg qmngr, smtpd, etc) prefix their program name in the log with postfix.


Are these error messages?:

match_list_match: permit_mynetworks: no match

What I try:

mail -s "Test Subject" < /dev/null
mail: Null message body; hope that's ok
mail: cannot send message: Process exited with a non-zero status