3 ms·
Your ISP doesn't have 3 open resolvers. Your neighbors have. Your ISP could terminate the contract with those 3 customers, but they won't - they're customers.
by noselasd 14y ago
Your ISP doesn't have 3 open resolvers. Your neighbors have.
Your ISP could terminate the contract with those 3 customers, but they won't - they're customers. They could block inbound trafic on port 25 to those 3 customers (if they knew about it), but they have no incentive to.
Or they could block all inbound traffic on port 25, which will likely break DNS for a lot of customers.
- baq 14y agoyou meant port 53, i presume?
- noselasd 14y agoups. ofcourse.
- nadinengland 14y agoI don't believe he/she did as for my ISP blocked port 80 and 443 making me resort to port 25 to send emails~
- deleted 14y ago[deleted]
- nwh 14y agoI meant that they exist within the ISPs ranges, not that the ISP itself owns them.