dspam: improve logging and config error reporting
dspam: improve logging and config error reporting

msimerson/qpsmtpd,msimerson/qpsmtpd,sieutruc/qpsmtpd,priyadi/qpsmtpd,priyadi/qpsmtpd,smtpd/qpsmtpd,sieutruc/qpsmtpd,salvis/qpsmtpd,salvis/qpsmtpd,sieutruc/qpsmtpd,smtpd/qpsmtpd,priyadi/qpsmtpd