[95948] in North American Network Operators' Group
RE: Abuse procedures... Reality Checks
daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Thu Apr 12 02:27:12 2007
Date: Thu, 12 Apr 2007 08:26:18 +0200 (CEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: nanog@merit.edu
In-Reply-To: <!&!AAAAAAAAAAAuAAAAAAAAAKTyXRN5/+lGvU59a+P7CFMBAN6gY+ZG84BMpVQcAbDh1IQAAAATbSgAABAAAACLxa+XJkgPSYpEAuNPTURZAQAAAAA=@iname.com>
Errors-To: owner-nanog@merit.edu
On Wed, 11 Apr 2007, Frank Bulk wrote:
> It truly is a wonder that Comcast doesn't apply DOCSIS config file filters
> on their consumer accounts, leaving just the IPs of their email servers
> open. Yes, it would take an education campaign on their part for all the
> consumers that do use alternate SMTP servers, but imagine how much work it
> would save their abuse department in the long run.
There are several large ISPs (millions of subscribers) that have done away
with TCP/25 altogether. If you want to send email thru the ISPs own email
system you have to use TCP/587 (SMTP AUTH).
Yes, this takes committment and resources, but it's been done
successfully.
--
Mikael Abrahamsson email: swmike@swm.pp.se
