nanog mailing list archives
Re: Port 587 vs. 25
From: Florian Weimer <fw () deneb enyo de>
Date: Mon, 23 Jul 2007 13:06:45 +0200
* Patrick W. Gilmore:
IOW: ISPs have no real reason to stop port 587, they do have a reason (whether you agree it is sufficient or not) to filter port 25.
Sorry for being unclear: If I block 25/TCP to *my* *own* servers for a *customer*, I will make sure that I block 587/TCP as well. (Legitimate reasons would be infrastructure protection, for instance.) This subthread started by someone who reported that someone else had been prevent from accessing their ISP's smarthosts over 25/TCP. This is not a 25 vs 587 issue, AFAICT.
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) 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)
- Re: DNS Hijacking by Cox Andrew Matthews (Jul 23)