nanog mailing list archives
Re: Port 587 vs. 25 [was: DNS Hijacking by Cox]
From: Jeroen Wunnink <jeroen () easyhosting nl>
Date: Mon, 23 Jul 2007 12:15:52 +0200
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
Current thread:
- Re: How should ISPs notify customers about Bots (Was Re: DNS Hijacking by Cox), (continued)
- Re: How should ISPs notify customers about Bots (Was Re: DNS Hijacking by Cox) Sean Donelan (Jul 23)
- Re: How should ISPs notify customers about Bots (Was Re: DNS Hijacking by Cox) Suresh Ramasubramanian (Jul 23)
- RE: How should ISPs notify customers about Bots (Was Re: DNS Hijacking by Cox) michael.dillon (Jul 23)
- RE: How should ISPs notify customers about Bots (Was Re: DNS Hijacking by Cox) Chris L. Morrow (Jul 23)
- Re: How should ISPs notify customers about Bots (Was Re: DNS Hijacking Joe Greco (Jul 23)
- Re: DNS Hijacking by Cox Florian Weimer (Jul 22)
- Port 587 vs. 25 [was: DNS Hijacking by Cox] Patrick W. Gilmore (Jul 23)
- Re: Port 587 vs. 25 [was: DNS Hijacking by Cox] Mikael Abrahamsson (Jul 23)
- Re: Port 587 vs. 25 [was: DNS Hijacking by Cox] Jeroen Wunnink (Jul 23)
- Re: Port 587 vs. 25 [was: DNS Hijacking by Cox] Mikael Abrahamsson (Jul 23)
- Re: Port 587 vs. 25 [was: DNS Hijacking by Cox] Jeroen Wunnink (Jul 23)
- Re: Port 587 vs. 25 Florian Weimer (Jul 23)
- Re: DNS Hijacking by Cox Niels Bakker (Jul 22)
- Re: DNS Hijacking by Cox David Conrad (Jul 23)
- Re: DNS Hijacking by Cox Joe Greco (Jul 23)
- Re: DNS Hijacking by Cox Sean Donelan (Jul 23)
- Re: DNS Hijacking by Cox Joe Greco (Jul 23)
- Re: DNS Hijacking by Cox Sean Donelan (Jul 23)
- Re: DNS Hijacking by Cox Joe Greco (Jul 23)
- Re: DNS Hijacking by Cox Sean Donelan (Jul 23)