Mail Server

amavisd-new genrsa /var/lib/dkim/domain.pem 1024

chown amavis:amavis /var/lib/dkim/domain.pem

chmod 0400 /var/lib/dkim/domain.pem

nano /etc/amavis/conf.d/50-user

dkim_key("domain", "dkim", "/var/lib/dkim/domain.pem");

"domain"  => { d => "domain", a => 'rsa-sha256', ttl => 10*24*3600 },

systemctl restart amavis

amavisd-new showkeys

amavisd-new testkeys

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