Jack Raats via Postfix-users:
> In the Netherlands but also in other countries you can use internet.nl
> to test your e-mail and webserver.
> It test your e-mailserver for ipv6 connectivity, SPF, DMARC and DKIM.
>
> My mailserver scores sometimes 100%, but also sometimes lower because it
> cann't connect postfix on ipv6.
>
> In main.cf mynetworks and inet_interfaces has my ipv4 and ipv6 address.
> inet_protocols = all.
>
> In the rest of my configs I'm using my ipv4 address.
>
> What is possible wrong in postfix or is it the connection?
To monitor your IPv6 connectivity, you could run a cron job that
runs a script that pings a well-connected IPv6 address:
#!/bin/sh
ping -q -c 10 some-ipv6 | loggger -t check-ping -p daemon.info
and scan the log every day or so.
Wietse
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