The document explains DKIM (DomainKeys Identified Mail) as an email authentication technique that verifies the sender's domain to prevent emails from being marked as spam. It outlines the importance of DKIM for sending emails through Exchange Server or IIS SMTP, detailing how it works through public/private key pairs and the publication of keys in DNS. It also briefly covers licensing models and offers a demonstration segment followed by a Q&A session.

1. DKIM on IIS SMTP and Exchange
NUR HOSSAIN
Sr. Technology Specialist

2. Agenda
• What is DKIM?
• Why DKIM is Required
For Email solution?
• How DKIM work?
• Licensing Model
• Deploy DKIM
• Q/A

3. What is
DKIM ?
• DKIM (Domain Keys Identified Mail) is an
email authentication technique that allows
the receiver to check that an email was
indeed sent and authorized by the owner of
that domain.

4. Why DKIM is
Required For
Email
solution?
Add DomainKeys/DKIM signature to
outgoing emails in Exchange Server
or IIS SMTP service.
Prevent the emails from your domain
from being flagged as spam or junk
mail by email servers which have
Domainkeys/DKIM implemented
(such as Hotmail, Yahoo mail and
Gmail).
An inbound transport agent for
DKIM/SPF/DMARC authentication is
provided as an optional component
as well.

5. How DKIM
work ?
The domain owner generates a public/private
key pair to be used for signing outgoing
messages (multiple key pairs are allowed).The
public key is published in a DNS TXT record,
and the private key is made available to the
DKIM-enabled outbound email server.
When an email is sent by an authorized user of
the email server, the server uses the stored
private key to generate a digital signature of
the message, which is inserted in the message
as a header, and the email is sent as normal

6. Licensing Model
Standard
License
Enterprise
License

7. Deploying DKIM
Let’s start Demo

8. Q/A

9. Thank You