nanog mailing list archives
Re: Spam Control Considered Harmful
From: "Jay R. Ashworth" <jra () scfn thpl lib fl us>
Date: Wed, 29 Oct 1997 21:36:02 -0500
On Wed, Oct 29, 1997 at 06:14:38PM -0600, John A. Tamplin wrote:
On Wed, 29 Oct 1997, Dalvenjah FoxFire wrote:Is there a good reason why the throwway folks (those mentioned above) haven't blocked port 25 from their dialups to the outside internet?We are an ISP and we don't block our dialups from going to port 25 elsewhere because this would eliminate their ability to rightfully use another mail server. This frequently occurs when a user accesses a mail server at work from their home dialup account. If other ISPs did this, we would have a problem where a user dialing into their ISP couldn't reach their virtual mail server, hosted on our network. We currently don't have many going the other way, but that may change.
This is roughly akin, though, isn't it, John, to the cache pollution problems that make it pretty much a requirement to run 2 separate nameservers: one for recursion and caching, and the other to be authoritative? Run a separate relay server, with some authentication, for users connecting from outside your AS.
The only reason I can think of that would stop this would be if a user subscribes to earthlink, but uses a UUnet dialin, that customer's software would be set up to use the Earthlink SMTP servers.In our case, this doesn't help since we and all the other local ISPs block relay access, so you have to use the mail server of the ISP you are currently connected to.
Hold it. Didn't you just say the opposite above? I think I'm confused. Cheers, -- jra -- Jay R. Ashworth jra () baylink com Member of the Technical Staff Unsolicited Commercial Emailers Sued The Suncoast Freenet "Pedantry. It's not just a job, it's an Tampa Bay, Florida adventure." -- someone on AFU +1 813 790 7592
Current thread:
- Re: Spam Control Considered Harmful, (continued)
- Re: Spam Control Considered Harmful Joe Shaw (Oct 30)
- Re: Spam Control Considered Harmful Barry Shein (Oct 30)
- Re: Spam Control Considered Harmful Cal Thixton - President - ThoughtPort Authority of Chicago (Oct 29)
- Re: Spam Control Considered Harmful Jon Lewis (Oct 29)
- Re: Spam Control Considered Harmful Cal Thixton - President - ThoughtPort Authority of Chicago (Oct 30)
- Re: Spam Control Considered Harmful John R. Levine (Oct 31)
- Boy are we off-topic...was Re: Spam Control Considered Harmful Jon Lewis (Oct 31)
- Re: Spam Control Considered Harmful Cal Thixton - President - ThoughtPort Authority of Chicago (Oct 30)
- Re: Spam Control Considered Harmful John A. Tamplin (Oct 29)
- Message not available
- Re: Spam Control Considered Harmful Jay R. Ashworth (Oct 29)
- Re: Spam Control Considered Harmful John A. Tamplin (Oct 29)
- Message not available
- Re: Spam Control Considered Harmful Jay R. Ashworth (Oct 29)