Access to the requested URL was blocked

While trying to access the URL:
/glaswelten?mailto=berger%2540holz-rentsch.de&subject=Beratungsgespr%25C3%25A4ch%2520f%25C3%25BCr%2520Glaswelten%2520vereinbar%250Aen&body=Ich%2520interessiere%2520mich%2520f%25C3%25BCr%2520die%2520Glaswelten-Produkte%250A%2520und%2520bitte%2520Sie%2520um%2520ein%2520Beratungsgespr%25C3%25A4ch.%2520Bitte%2520vere%250Ainbaren%2520Sie%2520mit%2520mir%2520telefonisch%2520einen%2520Termin%2520unter%2520der%25252%250A0Telefonnummer%253A
The content is blocked for the following condition:
waf
Additional information:
Inbound Anomaly Score Exceeded (Total Score: 9, SQLi=, XSS=): Last Matched Message: Multiple URL Encoding Detected
This incident was logged with the following log identifier:
ZgV@VeoQaO5lvOTLWFKtiQAAAQA
Your cache administrator is:
astaroadmin@dokumenta.de