sudo apt install -y network-manager vi /etc/netplan/00-installer-config.yaml network: version: 2 renderer: NetworkManager ethernets: enp0s8: dhcp4: false addresses: [192.168.40.106/24] optional: true netplan apply
https://kwatana…
Thunderbirdなどで以…
DKIM(DomainKeys…
DMARC(Domain-ba…
SPF(Sender Poli…
何故かメールセキュリティー側か…