"Stale" SMTP sessions
-
- Posts: 154
- Joined: Mon May 24, 2010 2:27 pm
"Stale" SMTP sessions
For the past couple weeks have seen a big increase in connections from China IPs that appear to be making a connection and not actually doing anything. They are just using up a session and hanging on for quite a while. Is there a setting somewhere that I am missing that would drop these connections after waiting a certain amount of time for a command to come through?
Kent Runyan
CFDynamics.com
Providing World Class Hosting Solutions for over two decades.
CFDynamics.com
Providing World Class Hosting Solutions for over two decades.
Re: "Stale" SMTP sessions
I just created a windows firewall block, which blocks China, Russia and a few other top spamming countries. This really helped performance and unwanted spam.
-
- Posts: 560
- Joined: Mon Nov 03, 2003 7:48 am
- Location: Cape Town
Re: "Stale" SMTP sessions
I added a DNS blacklist for cn.countries.nerd.dk which is blocking quite a few Chinese connections.