On Sat, 12 Jan 2019 at 11:10, Nick Howitt <n...@howitts.co.uk> wrote:
> Hi all,
> Until recently I did not receive too much spam and had it pretty-much
> under control. This week has gone mental. So far this week I have
> received 29860 connection attempts form {some_random_number}@qq.com to
> {the_same_random_number}@howitts.co.uk.
>
> I have a mail server and two backup MX servers and most of the mail is
> arriving via one of the backup servers. Some comes directly to me and
> some comes via the other backup server.Because of my settings, none of
> it can get through....
>
> Is there anything further I can do to cut down or stop this spam? Also
> are there more effective blocks I can do to lighten the load on the
> server and reduce traffic?
>
Using postscreen even if only with zen.spamhaus.org will probably stop most
of them before they get their foot in the door. If the load remains a
problem then try the postfix jail in fail2ban - but it will only help with
repeated attempts from same ips.
