[asterisk-users] OT: fail2ban, spam and mail servers

[Randy R]

On Tue, Jul 13, 2010 at 12:29 PM,  <covici at ccs.covici.com> wrote:
> What I do, is only open port 25 to the list of ips of the spam filtering
> service -- I use an iptables script called rc.firewall which I found
> several years ago which works well and has a nice syntax for this and I
> get no direct spam, I get some which gets by the filters.

Hi John,

I'd like to do that, but there are nomad users who might be anywhere
in the world. True maybe I could ask them to use port 587 and then
allow ONLY the service IPs access to port 25.

/r