Start with a false postive submission:
https://submit.symantec.com/false_positive/
Also, is this a Norton product? Enterprise SEP does not have the safe web feature. If Norton, then start here:
https://support.norton.com/sp/en/us/home/current/solutions/kb20100222230832EN_EndUserProfile_en_us
You may also want to check the Norton community:
https://community.norton.com