mail.python.org not listening on IPv6
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Description
mail.python.org do have an IPv6 (and an IPv4):
$ dig A +short mail.python.org
188.166.95.178
$ dig AAAA +short mail.python.org
2a03:b0c0:2:d0::71:1
But it does not accept emails on its IPv6 interface:
$ netcat -4 mail.python.org 25
220-mail.python.org ESMTP Postfix
$ netcat -6 mail.python.org 25
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the IPv4 and IPv6 connections with the netcat commands shown, and inspect the mail.python.org service and its Postfix configuration. Done means mail.python.org accepts SMTP connections on port 25 over IPv6 as well as IPv4.
Written by the indexing model from the issue text.
Assessment
- Domain
- infrastructure, networking
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100