Comment by chatmasta
8 hours ago
The actual secret is to use IPv6 with varied source IPs in the same subnet, you get an insane number of IPs and 90% of anti-scraping software is not specialized enough to realize that any IP in a /64 is the same as a single IP in a /32 in IPv4.
> any IP in a /64 is the same as a single IP in a /32 in IPv4
This is very commonly true but sadly not 100%. I am suffering from a shared /64 on which a VPS is, and where other folks have sent out spam - so no more SMTP for me.