reworked online_detect to the simpler online_query Only pipe is supported now. Use online_query="/bin/cat /path/to/file" instead of online_detect=file online_file=/path/to/file and online_query="/path/to/some/script foo" instead of online_detect=pipe online_pipe="/path/to/some/script foo" See man page masqmail.conf(5) and admin/config-transition.

# mailq.wmbiffrc for masqmail by Paolo

label.4=mailq
path.4=shell:::mailq|grep ^[[:graph:]]|grep -v empty|wc -l
interval.4=600
notify.4=beep
notify.4=true
action.4=(echo "messages in the queue:";mailq|grep ^[[:graph:]]|grep -v empty)|xmessage -center -buttons vaBen -file -