Seems that you found a part of the doc that needs update:
smeserver-qpsmtpd is core now, so you do not need to install it
it provides what is needed:
# rpm -ql smeserver-qpsmtpd|grep disc
/etc/e-smith/templates/var/service/qpsmtpd/config/peers/0/65disclaimer
/etc/e-smith/templates/var/service/qpsmtpd/config/peers/local/65disclaimer
/etc/e-smith/templates/var/service/qpsmtpd/config/plugins/65disclaimer
/usr/share/qpsmtpd/plugins/disclaimer
regarding the absence of error, signal-event does not return visible errors, only an error code not visible. To see if everything went good or wrong you should check at the /var/logs/messages content you should also check at /var/logs/qpsmtpd/current
few side notes about disclaimers :
- they won't be assigned to your mails sent directly through qmail (ie most of the internal deamon sent mails, and msot importantly mail sent by php scripts running on apache server, for those you could use a contrib to force using qpsmtpd)
- disclaimers are a waste of email space, and server processing time, a risk to break email signatures (dkim ...), and have no legal value unless placed manually by the sender "Disclaimers appear to have
arisen as a result of imitation and habit rather than because they are effective. " see
https://en.wikipedia.org/wiki/Email_disclaimer