[Pkg-mailman-hackers] Bug#997019: The issue is IPv6 related

[Colin Turner]

Dear Maintainer,

I have fixed my issue. I finally realised this morning all my tests that the LMTP runner was running were on IPv4, and sure enough

telnet ::1 8024 

showed “Connection refused”

There are no firewall rules that seem to be relevant, so I guess mailman3 is not reachable on IPv6 maybe but I haven’t investigated further.

In the meantime I have changed the transport for exim4 to be as follows:

# /etc/exim4/conf.d/transport/55_mm3_transport
mailman3_transport:
  driver = smtp
  protocol = lmtp
  allow_localhost
  # hosts = localhost
  # There seems to be a problem with the host being used in ipv6? Let's try this
  hosts = 127.0.0.1
  port = MM3_LMTP_PORT
  rcpt_include_affixes = true

Should it be working over IPv6? And if not, is this worth adding to README.Debian?

Many thanks for your work and apologies for the issue!

Kind regards,

CT.