nanog mailing list archives
Re: SMTP authentication for broadband providers
From: Suresh Ramasubramanian <suresh () outblaze com>
Date: Thu, 12 Feb 2004 07:18:18 +0530
Will Yardley wrote:
My understanding is that in most cases, providers are blocking port 25 outbound to prevent direct to MX spamming from their customers' machines
If you do that, please put in a corresponding ACL to block port 25 inbound _and_ outbound.
Otherwise, you just might get bitten by something like spoofed source routing, as several providers have found out in the past.
srs
Current thread:
- SMTP authentication for broadband providers Dan Ellis (Feb 10)
- Re: SMTP authentication for broadband providers Will Yardley (Feb 10)
- Re: SMTP authentication for broadband providers Adi Linden (Feb 10)
- Re: SMTP authentication for broadband providers Dave Crocker (Feb 11)
- Re: SMTP authentication for broadband providers Alex Bligh (Feb 11)
- Re: SMTP authentication for broadband providers Valdis . Kletnieks (Feb 11)
- Re: SMTP authentication for broadband providers Sean Donelan (Feb 11)
- Re: SMTP authentication for broadband providers Will Yardley (Feb 11)
- Re: SMTP authentication for broadband providers Suresh Ramasubramanian (Feb 11)
- Re: SMTP authentication for broadband providers Valdis . Kletnieks (Feb 11)
- Re: SMTP authentication for broadband providers Sean Donelan (Feb 11)
- Re: SMTP authentication for broadband providers Dave Crocker (Feb 11)
- Re: SMTP authentication for broadband providers Daniel Senie (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 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)