[97977] in North American Network Operators' Group
Re: Port 587 vs. 25 [was: DNS Hijacking by Cox]
daemon@ATHENA.MIT.EDU (Jeroen Wunnink)
Mon Jul 23 06:15:52 2007
Date: Mon, 23 Jul 2007 12:15:52 +0200
To: Mikael Abrahamsson <swmike@swm.pp.se>, nanog@merit.edu
From: Jeroen Wunnink <jeroen@easyhosting.nl>
In-Reply-To: <Pine.LNX.4.64.0707231147530.29164@uplift.swm.pp.se>
Errors-To: owner-nanog@merit.edu
There's no issue for a hosting provider to open alternate mail ports,
the issue is the flood of not too tech savvy customers who come at
you with a "I haven't changed anything, it's your fault, now make my
E-mail work again"
I've once suggested to one of the major ISP's here in the Netherlands
to close down outgoing port 25 for transit links only and keep it on
the local exchanges open (AMS-IX, NL-IX, etc), since there's usually
a direct point of contact anyways to the people you directly peer
with and thus having an easy abuse contact.
No success there though..
At 11:49 23-7-2007, you wrote:
>On Mon, 23 Jul 2007, Jeroen Wunnink wrote:
>
>>It's a lot more trouble for hosting providers that provide
>>customers with webhosting and E-mail services.
>
>Why? What stops you from migrating them to TCP/587? I'd imagine
>direct TCP/25 access to your servers would be spotty at best,
>anyway. Where I'm at, there are more ISPs blocking TCP/25 to
>anything but their own email servers, that those who do not block.
>
>--
>Mikael Abrahamsson email: swmike@swm.pp.se
Met vriendelijke groet,
Jeroen Wunnink,
EasyHosting B.V. Systeembeheerder
systeembeheer@easyhosting.nl
telefoon:+31 (035) 6285455 Postbus 48
fax: +31 (035) 6838242 3755 ZG Eemnes
http://www.easyhosting.nl
http://www.easycolocate.nl
