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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
