Access to the requested URL was blocked

While trying to access the URL:
/component/mailto/?tmpl=component&link=877e944afe5736e85321d6161f2120bd7d1844cb
The content is blocked for the following condition:
(none)
Additional information:
(none)
This incident was logged with the following log identifier:
ZgYXNmCUzmvWK5wpGnXFIAAAAB8
IT-Administrator:
edv@vulkaneifel.de