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TheHolbi

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  1. TheHolbi
    TheHolbi's post in DKIM signature and OpenSSL 3.0.7 was marked as the answer   
    The DKIM signature issue was resolved as follow:
    There were missing lines from the /etc/postfix/main.cf :
    #DKIM milter_default_action = accept milter_protocol = 6 smtpd_milters = inet:localhost:8891 non_smtpd_milters = inet:localhost:8891 and the correct /etc/opendkim.conf was :
    AutoRestart Yes AutoRestartRate 10/1h LogWhy Yes Syslog Yes SyslogSuccess Yes Mode sv Canonicalization relaxed/simple ExternalIgnoreList refile:/etc/opendkim/TrustedHosts InternalHosts refile:/etc/opendkim/TrustedHosts KeyTable refile:/etc/opendkim/KeyTable SigningTable refile:/etc/opendkim/SigningTable SignatureAlgorithm rsa-sha256 Socket inet:8891@localhost PidFile /var/run/opendkim/opendkim.pid UMask 022 UserID opendkim:opendkim TemporaryDirectory /var/tmp After completed /etc/postfix/main.cf and restarted services, the DKIM signature was properly inserted to the outgoing emails.