Wietse:
> Search for "postfix policy rate limit"
Daniel Miller:
> The bulk of the results I receive from that refer to external policy
> daemons.
Yes, that was the idea.
> smtpd_client_connection_count_limit
> smtpd_client_connection_rate_limit
Two problems:
- You might want to look into smtpd_client_auth_rate_limit and
smtpd_client_message_rate_limit.
- The smtpd_client_ settings assume that badness comes from a small
number of IP addresses. That is usually not the case with stolen
credentials.
> If there's another reference I should consult please tell me.
Absent other information, a policy daemon is the solution
that I would recommend.
Wietse
