/usr/share/doc/qmail/PIC.relaybad is in qmail 1.06-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | qmail-smtpd Receive message by SMTP from another host:
MAIL FROM:<spammer@aol.com>
RCPT TO:<bill@irs.gov>
Is $RELAYCLIENT set? No.
Is irs.gov in rcpthosts? No.
Reject RCPT.
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