fine-tuning smtpd_client_*_rate_limit

2015-09-24 Thread Thomas Keller
I am using Postfix as personal mailserver, with very light traffic. I do, however, get a lot of open-relay attacks. Often, these attacks come in bursts, tens of attacks within couple of seconds, from the same IP. Would this situation be a good use of "rate_limits" ? Any suggestion how I should f

Re: fine-tuning smtpd_client_*_rate_limit

2015-09-24 Thread Noel Jones
On 9/24/2015 3:28 AM, Thomas Keller wrote: > I am using Postfix as personal mailserver, with very light traffic. > > I do, however, get a lot of open-relay attacks. > Often, these attacks come in bursts, tens of attacks within couple of > seconds, from the same IP. > > Would this situation be a g

Re: fine-tuning smtpd_client_*_rate_limit

2015-10-14 Thread allenc
I run a low volume mail server - about a dozen messages per day. Like you, I have had open relay attacks, and also persistent probes with no messages being sent. So far, the best answer I have found is to limit simultaneous connections to one per host. My current anti-abuse settings are:- smtpd