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Steps to Install DKIM for the Customer " @girlsincpnw.org " in learnexa Domain\\
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yum install epel-release\\
yum install opendkim\\


Steps to generate keys for DKIM\\
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cd /etc/opendkim\\
opendkim-default-keygen\\


cd /etc/opendkim/keys\\
Create a directory for the requested Domain\\
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mkdir -p girlsincpnw.org\\

Key Generation steps for the required Domain\\
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/usr/sbin/opendkim-genkey -D /etc/opendkim/keys/girlsincpnw.org -d girlsincpnw.org -s learnexa\\


change the Owner ship for keys directory \\
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cd /etc/opendkim/\\
chown -R opendkim:opendkim *\\

KeyTable Entry\\
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vi /etc/opendkim/KeyTable\\

learnexa._domainkey.girlsincpnw.org girlsincpnw.org:learnexa:/etc/opendkim/keys/girlsincpnw.org/learnexa.private\\

Signing Table Entry\\
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vi /etc/opendkim/SigningTable\\

*@girlsincpnw.org learnexa._domainkey.girlsincpnw.org\\

add the below mentioned line in sendmail.mc and compile sendmail.mc configuration file to sendmail.cf file\\
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INPUT_MAIL_FILTER(`opendkim', `S=inet:8891@127.0.0.1')


m4 /etc/mail/sendmail.mc > sendmail.cf\\

Restart sendmail service\\
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/etc/init.d/sendmail restart\\

Restart opendkim service\\
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/etc/opendkim restart\\

Need to compare existing /etc/opendkim.conf\\