nanog mailing list archives
Re: The Reg does 240/4
From: Mark Andrews <marka () isc org>
Date: Thu, 15 Feb 2024 14:49:13 +1100
On 15 Feb 2024, at 13:25, Stephen Satchell <list () satchell net> wrote: On 2/14/24 4:23 PM, Tom Samplonius wrote:The best option is what is happening right now: you can’t get new IPv4 addresses, so you have to either buy them, or use IPv6. The free market is solving the problem right now. Another solution isn’t needed.Really? How many mail servers are up on IPv6?
Lots.
How many legacy mail clients can handle IPv6?
Most. If you are using mbox format there is no change. The only ones that don’t handle it are ones that don’t have support for creating IPv6 connections.
How many MTA software packages can handle IPv6 today "right out of the box" without specific configuration?
Most. Really its been 20+ years since IPv6 was added to most of the mail products that actually use TCP to connect to a mail store or to send email. Just about the only thing that was needed to be done was to look for AAAA records in addition to A records after looking up the MX records or to replace gethostbyname with getnodebyname and then getaddrinfo. This was a 10 minute job for most developers. If you publish AAAA records for a service they will be used.
Does any IPv6 enabled ISP provide PTR records for mail servers?
If they want to send email from those addresses they do.
How does Google handle mail from an IPv6 server?
Mostly the same as from IPv4.
The Internet is not just the Web.
It isn’t. But you could answer most of these by just looking at the email headers in your own incoming mail. Email has been delivered over IPv6 for over 2 decades now. -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka () isc org
Current thread:
- Re: The Reg does 240/4, (continued)
- Re: The Reg does 240/4 Owen DeLong via NANOG (Feb 14)
- Re: The Reg does 240/4 Tom Beecher (Feb 13)
- Re: Enough of The Reg does 240/4 John Levine (Feb 13)
- Re: The Reg does 240/4 Owen DeLong via NANOG (Feb 14)
- Re: The Reg does 240/4 William Herrin (Feb 14)
- Re: The Reg does 240/4 John Levine (Feb 14)
- Re: The Reg does 240/4 Christopher Hawker (Feb 14)
- Re: The Reg does 240/4 Tom Samplonius (Feb 14)
- Re: The Reg does 240/4 Stephen Satchell (Feb 14)
- Re: mail and IPv6, not The Reg does 240/4 John Levine (Feb 14)
- Re: The Reg does 240/4 Mark Andrews (Feb 14)
- Re: The Reg does 240/4 Lyndon Nerenberg (VE7TFX/VE6BBM) (Feb 15)
- Re: The Reg does 240/4 Owen DeLong via NANOG (Feb 15)
- Re: mail and IPv6, not The Reg does 240/4 Tim Howe (Feb 15)
- Re: The Reg does 240/4 Mike Hammett (Feb 16)
- RE: The Reg does 240/4 Brotman, Alex via NANOG (Feb 16)
- Re: The Reg does 240/4 John Levine (Feb 16)
- Re: The Reg does 240/4 Owen DeLong via NANOG (Feb 17)
- Re: The Reg does 240/4 Michael Thomas (Feb 17)
- Re: IPv6 mail The Reg does 240/4 John Levine (Feb 17)
- Re: IPv6 mail The Reg does 240/4 Michael Thomas (Feb 17)