On 9/19/19 2:47 AM, Elad Cohen wrote:
It is not related to nefarious activity as you wrote, FDCServers policy is to stop routing any ranges which is in Spamhaus SBL (no matter what), due to the phear from Spamhaus to list all of FDCServers ranges in SBL, which was told to us in a documented phone call, listing all of the ranges by Spamhaus is a known agrressive and bullying tactic by Spamhaus as you can find in many webpages online. Do you think Spamhaus uses "aggressive and bullying tactic[s]"? You never lived under the sword of SPEWS.
https://en.wikipedia.org/wiki/Spam_Prevention_Early_Warning_System
As a former abuse and mail admin in a web hosting company with (at the time) 3000 domains serviced, I found Spamhaus to be a firm but fair organization. Respond quickly and effectively to abuse complaints, stoping the spam flow, Spamhaus delisted -- sometimes without being asked to. Note: this list is of and for network operators. Spamhaus and other DNSBLs are the subject for a mailing list of and for mail admins.