Access to the requested URL was blocked

While trying to access the URL:
/component/mailto/?tmpl=component&link=ab0948e9099cc04e3a679c3ad2f2e1957bda101b
The content is blocked for the following condition:
(none)
Additional information:
(none)
This incident was logged with the following log identifier:
Zga5mNE_bjY2pPh_8ObJgwAAAA8
IT-Administrator:
edv@vulkaneifel.de