[members-discuss] listed in UCEProtect level 3 blacklist

Dear All friends, We've faced a problem recently regarding getting listed our ASN in UCEProtect Level-3 which means that about 0.2% of our IP Addresses are listed in UCEprotect-L1 level and are recognized as abusive spammers. As I checked delisting solution on the UCEProtect website, we have to pay 500 Euros roughly to get rid of this problem or wait for a week provided that none of our IPs get connected to their spam-trappers during this week. To make matters worse, yahoo, AOL, and Microsoft are using this blacklist service on their mail servers. What is your other solution for preventing IP black listing? Have you ever faced to the same problem with this company? Pay or not? Any help in this regard is appreciated. BR,