In Progress CPANEL-42825 - Ratelimit incoming mail to non-existent accounts


Well-Known Member
Mar 22, 2021
United States
cPanel Access Level
Root Administrator
Thank you @cPRex.

So I set the smtp_accept_max_per_host to '20' but it didn't work. Also tried the smtp_accept_max to 20 but that didn't work either. It seems like absolutely nothing from Exim is working against dictionary attacks. This is crazy. Still getting exactly 100 messages on each attack, and something is obviously blocking or limiting them to 100, but I don't understand what it is. The only thing I can imagine is that the attacker is only sending 100 at a time, but that really defeats the purpose of sending a dictionary attack.