SMTP localnet accept on PVE is not IPv6 compliant

[Romaq]

On PVE, /etc/postfix/main.cf has the following line (network obscured):

mynetworks = 127.0.0.0/8 192.168.4.45/22 [fe80::5a47:caff:fe74:8c3c]/64

'ss -lnt' shows what I believe to be the correct line:
[::]:25

As a "guess", postfix's SMTP is listening correctly, but I am not competent to open up the IPv6 firewall correctly.

I'm going to move along at this point until I develop the competence to resolve this later.

[Romaq]

Going to postpone for the moment. IPv4 can work, and the IPv6 requirement is "nice to have once I learn how to do it correctly."

[Romaq]

Going to postpone for the moment. IPv4 can work, and the IPv6 requirement is "nice to have once I learn how to do it correctly."

https://x.com/Romaq/status/1794416900757463396 is where I reached out to @_WunderTech for help. Hopefully a response.