nanog mailing list archives
Re: Is your ISP blocking outgoing port 25?
From: Jack Bates <jbates () brightok net>
Date: Thu, 18 Jun 2009 16:38:45 -0500
Christopher Morrow wrote:
in all seriousness, most isp's (consumer provider folk) today do some form of blocking of port 25, if you are 'smart' enough to evade this sort of thing, then you can still do email/blah. 99.999% of users are: 1) not interested in bypassing it 2) not clued into what's going on 3) using webmail
I'd say 0.5% of my customer base contacts the helpdesk to setup auth and bypass tcp/25 blocks using tcp/587. Another 2% use my webmail offsite, and about 10% use webmail only (on my network or off).
Then there's those pesky gmail users. We should just block them. j/k :P
Why is this debate still ongoing??
Because nanog is slow? Actually, I think the original poster was just curious as these days not much is said overly much outside of the "Die Spammer" threads in other venues.
Jack
Current thread:
- Is your ISP blocking outgoing port 25? Zhiyun Qian (Jun 18)
- RE: Is your ISP blocking outgoing port 25? Paul Stewart (Jun 18)
- Re: Is your ISP blocking outgoing port 25? Charles Wyble (Jun 18)
- RE: Is your ISP blocking outgoing port 25? Paul Stewart (Jun 18)
- Re: Is your ISP blocking outgoing port 25? Charles Wyble (Jun 18)
- Re: Is your ISP blocking outgoing port 25? Charles Wyble (Jun 18)
- Re: Is your ISP blocking outgoing port 25? Paul M Moriarty (Jun 19)
- Re: Is your ISP blocking outgoing port 25? Joe Provo (Jun 18)
- Re: Is your ISP blocking outgoing port 25? Lyndon Nerenberg (Jun 18)
- Re: Is your ISP blocking outgoing port 25? Christopher Morrow (Jun 18)
- Re: Is your ISP blocking outgoing port 25? Jack Bates (Jun 18)
- Re: Is your ISP blocking outgoing port 25? Jeroen Wunnink (Jun 19)
- Re: Is your ISP blocking outgoing port 25? Patrick W. Gilmore (Jun 19)
- Re: Is your ISP blocking outgoing port 25? Jeroen Wunnink (Jun 19)
- Re: Is your ISP blocking outgoing port 25? Sean Donelan (Jun 19)
- Re: Is your ISP blocking outgoing port 25? Steven King (Jun 19)
- Re: Is your ISP blocking outgoing port 25? Michael Thomas (Jun 19)
- Re: Is your ISP blocking outgoing port 25? Dave Pooser (Jun 20)
- RE: Is your ISP blocking outgoing port 25? Frank Bulk (Jun 22)
- Re: Is your ISP blocking outgoing port 25? John Levine (Jun 22)
- RE: Is your ISP blocking outgoing port 25? Frank Bulk (Jun 22)
- Re: Is your ISP blocking outgoing port 25? Lyndon Nerenberg (Jun 18)
- RE: Is your ISP blocking outgoing port 25? Paul Stewart (Jun 18)