Question Receiving mail from illegal visitor

It seems to be a notification mail from your site. What you can do is to check your access logs, when it sent to look for any suspicious activity. In phpMyAdmin look in kunena_user_topics. Search in this table for the topic_id for the spam and check what you find there. If it is a real notificatin you will find it there.

It's not a real notification!
no trace in Kunena_user_topic.
it's spam, it's notipficated to the administrator for moderation but not published in the forum.
three weeks ago I detected some illegal user generated in Joomla and I purged them. (deleted from Joomla)
after that, I receives a dozen of messages like the last.
maybe there is a relation between deleting the illegal user and strange notifications received...
many thanks
Patrizio

Maybe someone found out a way to send out notifications without being a member, But if you look in access logs you might find out how.

I also am getting the very same problem.

could you paste here the kunena report,

we have fixed some issues on the last builds.

and if you clicked on the link, which user has posted the message on the forum.