Autor: Always Learning Data: A: Exim Users Assumpte: Re: [exim] 421 Too many concurrent SMTP connections;
please try again later.
Jawad Khawaja from Lahore wrote on Thu, 1 Apr 2010 16:48:57 +0500.
> You can do limit SMTP session limit as well using IPTABLES.... Add below command in your IPTBALES /etc/sysconf/iptables
>
> -A INPUT -i eth0 -p tcp -m tcp --dport 25 -m limit --limit 20/min -j ACCEPT
>
> This will limit users to 20 sessions per min...
Much appreciated advice. Very useful for stopping people rapidly
downloading all the 5,000+ pages on my web site (--dport 80).
