I'm trying to debug an exim configuration issue (Ubuntu) and I see lots of lines in the config such as:
remote_smtp: debug_print = "T: remote_smtp for $local_part@$domain" driver = smtp
However, I cannot figure out how to get the output of these statements. I've tried editing /etc/default/exim4 and adding various CLI parameters there such as -v, -d, -d+all and while they do have an effect, the debug_print lines are nowhere to be found (stderr,stdout,/var/log/exim4/mainlog).
How do enable and where do I then find the "T: remote_smtp for ..." output?