CONFIGURE DKIM SPF AND DMARC RECORD - CloudMinister

CONFIGURE DKIM SPF AND DMARC RECORD

 

1. Install opendkim package

     # yum -y install opendkim

 

2. Generate dkim key into default keys directory

# opendkim-default-keygen (This command use to generate default key to verify dkim record)
Mainly this file generate two files 1.default.private and 2. Default.txt
default.txt is public_key that put on the dns server.

3. Open opendkim.conf file and edit some line or uncomment

    # vim /etc/opendkim.conf

Mode sv

Socket inet:8891@127.0.0.1

Canonicalization    relaxed/simple

Domain    my_domain.com_name

KeyFile    /etc/opendkim/keys/opendkim.private

KeyTable    refile:/etc/opendkim/KeyTable

SigningTable    refile:/etc/opendkim/SigningTable

ExternalIgnoreList    refile:/etc/opendkim/TrustedHosts

InternalHosts    refile:/etc/opendkim/TrustedHosts

4. Open /etc/opendkim/keyTable file and edit example.com to yourdomain.com

# vim /etc/opendkim/KeyTable

default._domainkey.yourDomain.com  yourdomain.com:default:/etc/opendkim/keys/default.private

5. Open SigningTable file and define outgoing mail names

    # vim /etc/opendkim/SigningTable

*@yourdomain.com default._domainkey.yourdomian.com

6. Open TrustedHost file and do domain and hostname entry

         # vim /etc/opendkim/TrustedHost

127.0.0.1

Mail.yourdomian.com

Yourdomain.com

7. At last edit main.cf file add some line in the last

    # vim /etc/postfix/main.cf

smtpd_milters = inet:127.0.0.1:8891

non_smtpd_milters = $smtpd_milters

Milters_default_action = accept

8. Restart all services

# systemctl restart opendkim postfix

# systemctl enable opendkim postfix

9. Do entry in DNS Fully Managed VPS Hosting Server 

Go to Domain → Go to manage DNS and create record

Type

Name

Value

TTL

TXT

@

=spf1 +a +mx +ip4:XX.XX.XX.XX ~all

default

TXT

default._domainkey

v=DKIM1; k=rsa; p=default.txt file key

default

TXT

_DMARC

v=DMARC1; p=none

default

 

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