nanog mailing list archives
RE: SMTP authentication for broadband providers
From: "Alexander Kiwerski" <akiwerski () winstar com>
Date: Thu, 12 Feb 2004 12:49:14 -0800
Well, over here we have gone that route, and we're a National ISP/NSP. Customers can either A) Run their own mail servers, which makes them responsible for the use (or abuse) of their own mail server, or, B) If they choose to purchase mail services from us, we require authentication (via SMTP_AUTH) to send/relay out. Alexander Kiwerski Senior Network Engineer Winstar-IDT Network Operations & Security Desk: +1 206 574 3121 Mobile: +1 206 571 0274 -----Original Message----- From: owner-nanog () merit edu [mailto:owner-nanog () merit edu]On Behalf Of Dan Ellis Sent: Thursday, February 12, 2004 11:31 AM To: nanog () merit edu Subject: RE: SMTP authentication for broadband providers First, a quick thanks to everyone that responded. I've received useful and excellent info from everyone. We do not block on 25 outbound/inbound, but we are considering it for the residential broadband connections - maybe filter, proxy, or at least monitor it. I should clarify one thing: We are considering REQUIRING SMTPAUTH for all connections from customers for relaying - whether they are on our IP space or not. I know this will only buy us a few months until the next round of viruses steal username/pass, but even then it will give us the ability to detect an infected/SPAMMING customer quicker and auto shut them down (vs having to shutdown the IP, and then the customer receives a new IP...) My question is: Have any or many of the larger ISP's gone the route of REQUIRING all customers to use SMTPAUTH - regardless of where they are connected. Can anyone disclose who these regional or national providers are? Thanks again --Dan -- Daniel Ellis, CTO, PenTeleData (610)826-9293
qmail (as usual).
Current thread:
- Re: SMTP authentication for broadband providers, (continued)
- Re: SMTP authentication for broadband providers Sean Donelan (Feb 11)
- Re: SMTP authentication for broadband providers Alex Bligh (Feb 11)
- Re: SMTP authentication for broadband providers Sean Donelan (Feb 11)
- Re: SMTP authentication for broadband providers Alex Bligh (Feb 11)
- Re: SMTP authentication for broadband providers Dave Crocker (Feb 12)
- Re: SMTP authentication for broadband providers Lou Katz (Feb 11)
- RE: SMTP authentication for broadband providers Alexander Kiwerski (Feb 12)
- Re: SMTP authentication for broadband providers Lou Katz (Feb 12)
- Re: SMTP authentication for broadband providers Alex Bligh (Feb 12)
- Re: SMTP authentication for broadband providers Valdis . Kletnieks (Feb 12)
- Re: SMTP authentication for broadband providers Alex Bligh (Feb 13)
- Re: SMTP authentication for broadband providers Valdis . Kletnieks (Feb 13)
- Re: SMTP authentication for broadband providers Rob Pickering (Feb 13)
- Open, anonymous services and dealing with abuse Sean Donelan (Feb 15)
- Re: Open, anonymous services and dealing with abuse Daniel Reed (Feb 16)