nanog mailing list archives
Re: Is your ISP blocking outgoing port 25?
From: Steven King <sking () kingrst com>
Date: Fri, 19 Jun 2009 18:35:00 -0400
Most MTAs don't come preconfigured with port 587 either. It is amazing how many people/organizations go with the "if it isn't broke, don't fix it" mentality, even though it clearly needs to be revised and something new needs to be done/supported. Email needs to be revamped on a larger scale than just adding standards. Sean Donelan wrote:
On Fri, 19 Jun 2009, Jeroen Wunnink wrote:1. Customers remember it more easily 2. Some ISP's also block 587 (hence 'SMTP ports' rather then 'SMTP port' in my previous comment ;-)Those same clueless ISPs will probably block 2525 someday too, clueless expands to fill any void. And using non-standard things like 2525 only lead to more confusion for customers later when they try someone else's non-standard choice, e.g. port 26 or 24 or 5252 and wonder why those don't work. On the other hand, why don't modern mail user agents and mail transfer agents come configured to use MSA port 587 by default for message submission instead of making customers remember anything? RFC 2476 was published over a decade ago, software developers should have caught up to it by now. Imagine if the little box in Outlook and Exchange had the MSA port already filled in, and you only needed to change it for legacy things.
-- Steve King Network Engineer - Liquid Web, Inc. Cisco Certified Network Associate CompTIA Linux+ Certified Professional CompTIA A+ Certified Professional
Current thread:
- Re: Is your ISP blocking outgoing port 25?, (continued)
- 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? Matthew Huff (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? John R. Levine (Jun 22)
- RE: Is your ISP blocking outgoing port 25? Ted Hardie (Jun 22)
- Re: Is your ISP blocking outgoing port 25? Charles Wyble (Jun 18)
- Re: Is your ISP blocking outgoing port 25? Randy Bush (Jun 19)