Postfix: warning when undeliverable for x hours
 

hi,

I know that the config option maximal_queue_lifetime sets the time a message can stay in the queue until it is bounced. However, is it possible to make postfix send out a warning saying something like: "this message was undeliverable for the past x hours, i will keep trying till..."

thx

bump

delay_warning_time = 4h

in main.cf will send you a warning after 4 hours