[TriLUG] Why the big boys block mail from dynamic IPs

[Jim Ray]

i am an idiot as well.  someone found my open relay on rr, bounced prOn off
my server and caused rr to send nasty letter to my wife (cable bill in her
name).  i have never emailed prOn yet was responsible because of open relay.

woops.

> -----Original Message-----
> From: trilug-bounces at trilug.org [mailto:trilug-bounces at trilug.org]On
> Behalf Of Ken Mink
> Sent: Thursday, September 18, 2003 11:21 AM
> To: trilug at trilug.org
> Subject: [TriLUG] Why the big boys block mail from dynamic IPs
>
>
> It's because of idiots like me.
>
> A few weeks ago, I decided to use my server at home to host
> my own smtp
> server. I was tired of mail spending hours and sometimes days going
> between RR's mail servers. I went with Postfix and spent a fair amount
> of time testing my configuration. I tested my server from a number of
> the open relay test sites and it passed all of them.
>
> This morning, I noticed that a message I had sent to another list had
> not shown up. I logged in and did 'postqueue -p'. The screen just kept
> scrolling and scrolling. There were 64k messages in my
> incoming queue. I
> was baffled. Well, it turns out I had made a small config
> mistake and I
> was open to relaying from .nc.rr.com. Some spam bot inside
> nc.rr.com had
> found me and was pumping mail through.
>
> I have fixed my mistake, but have also thrown up the shields(iptables)
> while I rethink the mail server idea.
>
> You can't test enough.
>
> Ken
> --
> "They that can give up essential liberty to obtain a little temporary
> safety deserve neither liberty nor safety."--Benjamin Franklin
> " 'Necessity' is the plea for every infringement of human liberty; it
> is the argument of tyrants; it is the creed of slaves."--William Pitt
>
>
>