How to Setup DKIM with Qmail Toaster

1) wget http://qmailtoaster.com/dkim.tgz

2) tar –zxf dkim.tgz

3) cd dkim

4) yum install perl-XML-Simple perl-Mail-DKIM perl-XML-Parser

5) mkdir /var/qmail/control/dkim

6) cp signconf.xml /var/qmail/control/dkim/

7) chown -R qmailr:qmail /var/qmail/control/dkim/

8) dknewkey /var/qmail/control/dkim/global.key > /var/qmail/control/dkim/public.txt

9) perl -pi -e 's/global.key._domainkey/dkim1/' /var/qmail/control/dkim/public.txt

10) qmailctl stop

11) mv /var/qmail/bin/qmail-remote /var/qmail/bin/qmail-remote.orig

12) mv qmail-remote /var/qmail/bin

13) chmod 777 /var/qmail/bin/qmail-remote

14) chown root:qmail /var/qmail/bin/qmail-remote

15) qmailctl start

16) cat /var/qmail/control/dkim/public.txt

17) Create a TXT record on DNS server for the domain you want to set DKIM as shown in the output of step 16.

18) Your DKIM setup is done.

19) Just send test mail on any yahoo email id and check headers. If show error in headers then just wait to reflect DNS.

In order to test your settings, simply send an email to: check-auth@verifier.port25.com and/or check-auth2@verifier.port25.com with the suject of "test" (without the quotes) and "Just testing" in the body (also without quotes). It is best but not required to have a subject and body because this service will also show you how spamassassin rated your email.

You can also use http://www.sendmail.org/dkim/tools to check and confirm you DKIM configuration