Hi all
I worked recently to bring a new feature to nethserver: opendkim
The goal is to sign the email by a RSA key and allow other email servers to authenticate you as the good sender by retrieving the public key in your public DNS zone (default._domainkey.YourDomainName)
the protocol of test is available at https://github.com/NethServer/dev/issues/5407
to update your server, do
yum update nethserver-mail-common --enablerepo=testing
I would like to personally thank (no matter for order) @davidep @filippo_carletti @giacomo for test, idea, code, support and fun.
Please test and report