26 Mar
2014
26 Mar
'14
1:36 p.m.
John Levine <johnl@iecc.com> wrote:
If I were a spammer or an ESP who wanted to listwash, I could easily use a different IP addres for every single message I sent.
Until mail servers start rate-limiting the number of different addresses that are used :-) You can do something like the following in Exim, which limits IPv6 senders to 16 addresses per /64 per day. defer hosts = <; 2000::/4 ratelimit = 16 / 1d / per_conn /\ unique=$sender_host_address /\ ${mask:$sender_host_address/64} Tony. -- f.anthony.n.finch <dot@dotat.at> http://dotat.at/ Shannon, Rockall: Southerly 5 or 6 at first in west, otherwise variable 3 or 4, becoming northeasterly 4 or 5. Moderate or rough. Showers. Good, occasionally moderate.