qqdump - Receive a message with the qmail-queue protocol, and print its contents.
env QMAILQUEUE=qqdump fixcrio /var/qmail/bin/qmail-smtpd
This program simply receives a message using the qmail-queue protocol, then dumps its contents to STDERR (which will show up in your qmail logs if that's what you're testing).
To use it, put it somewhere as a qmail-queue replacement, possibly using Bruce Guenter's patch and the QMAILQUEUE environment variable.
qmail-queue
QMAILQUEUE
For example, with that patch, you might run:
then conduct an SMTP conversation with the SMTP server, and see what qmail-queue saw as a result.
To install Mail::Qmail::Queue::Send, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Mail::Qmail::Queue::Send
CPAN shell
perl -MCPAN -e shell install Mail::Qmail::Queue::Send
For more information on module installation, please visit the detailed CPAN module installation guide.