[47708] in North American Network Operators' Group
Re: anybody else been spammed by "no-ip.com" yet?
daemon@ATHENA.MIT.EDU (Stephen J. Wilcox)
Fri May 10 14:22:09 2002
Date: Fri, 10 May 2002 19:20:49 +0100 (BST)
From: "Stephen J. Wilcox" <steve@opaltelecom.co.uk>
To: David Charlap <David.Charlap@marconi.com>
Cc: nanog@merit.edu
In-Reply-To: <3CDC0B97.E4B72FE2@marconi.com>
Message-ID: <Pine.LNX.4.21.0205101918540.16031-100000@staff.opaltelecom.net>
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Errors-To: owner-nanog-outgoing@merit.edu
On Fri, 10 May 2002, David Charlap wrote:
>
> Jim Hickstein wrote:
> >
> > My customers who reach me (a mail service) from Earthlink dialups
> > are affected by this. Apparently it's still happening. I run a
> > listener on another host and port, known only to this (so far)
> > small subset of people, to be able to serve them. In general, we
> > advise people to use their ISP's relay for outgoing mail, but
> > Earthlink won't let them relay because the sender domain is not
> > one that Earthlink knows about (i.e. is charging them for).
> > Apparently.
>
> Something's weird here.
>
> My home DSL line is Earthlink. I send out mail through their server
> (specifically through smtp.mindspring.com), and I have my mail client
> cofigured to use my yahoo.com address as the return address. They don't
> seem to care about the message's sender address as long as it comes from
> an Earthlink link.
Not weird, this is the way most smtps are setup - not to verify sender
address but only allow the ISP's IP addresses. (this is how not to be an
open relay server which spammers use..)
Steve
>
> Is the dial-up any different?
>
> Now, I do know that I can't send through the Earthlink/Mindspring server
> from outside their network. But that's not a big deal for me. When I'm
> away from home, I just use the server of whatever network I'm connected
> to at the time, which has never given me a problem.
>
> I think Earthlink has an SMTP-AUTH mail server as well. It's not the
> same one that the default dialups use, however. I think it's
> smtpauth.earthlink.com, but I haven't actually tried using it.
>
> -- David
>
