Original sentence: Due to the automation of spamtrap SORBS regularly lists the addresses of legitimate mail servers.Therefore, SORBS should not be configured as a single blocking test in a spam filter, but in combination with other spam indicators
Edited sentence: Due to some questionable and aggressive techniques, SORBS regularly creates false blacklist entries for legitimate mail servers.Therefore, SORBS should not be configured as a single blocking test in a spam filter, but at most with medium probability, and only in combination with other reliable spam indicators should lead to a rejection of the email message