This can be done by adding the account to badmailfrom file located in /usr/local/psa/qmail/control/ directory for the standard build, and /var/qmail/control/ directory for the RPM build.
~# cat /usr/local/psa/qmail/control/badmailfrom
qmail-smtpd will reject every recipient address for a message, if the envelope sender address is listed in badmailfrom . A line in badmailfrom may be in the form of @domain.tld meaning every address at the host.
Alternatively, Black List can be configured through Plesk:
Home > Tools & Settings > Spam Filter Settings > Black Lists
For particular email:
Home > Subscription > domain > Mail >> click on the email address > Spam filter > Black List