/usr/share/perl5/Qpsmtpd/ is in qpsmtpd 0.84-9.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Qpsmtpd/Address.pm
/usr/share/perl5/Qpsmtpd/Auth.pm
/usr/share/perl5/Qpsmtpd/Command.pm
/usr/share/perl5/Qpsmtpd/ConfigServer.pm
/usr/share/perl5/Qpsmtpd/Connection.pm
/usr/share/perl5/Qpsmtpd/Constants.pm
/usr/share/perl5/Qpsmtpd/DSN.pm
/usr/share/perl5/Qpsmtpd/Plugin/
/usr/share/perl5/Qpsmtpd/Plugin.pm
/usr/share/perl5/Qpsmtpd/Plugin/Async/
/usr/share/perl5/Qpsmtpd/Plugin/Async/DNSBLBase.pm
/usr/share/perl5/Qpsmtpd/PollServer.pm
/usr/share/perl5/Qpsmtpd/Postfix/
/usr/share/perl5/Qpsmtpd/Postfix.pm
/usr/share/perl5/Qpsmtpd/Postfix/Constants.pm
/usr/share/perl5/Qpsmtpd/SMTP/
/usr/share/perl5/Qpsmtpd/SMTP.pm
/usr/share/perl5/Qpsmtpd/SMTP/Prefork.pm
/usr/share/perl5/Qpsmtpd/TcpServer/
/usr/share/perl5/Qpsmtpd/TcpServer.pm
/usr/share/perl5/Qpsmtpd/TcpServer/Prefork.pm
/usr/share/perl5/Qpsmtpd/Transaction.pm
/usr/share/perl5/Qpsmtpd/Utils.pm