
c5qqz (c5qqz) asked a question.
While configuring custom email domain, Okta is enforcing to add the "Mail domain to send from".
Is Okta going to send email through our company smtp server ? or Is this just a subdomain for Okta to add in email which is sent from Okta (Sendgrid)?

Hi Suresh, Okta won't leverage your company's SMTP server to send email. Okta will generate a form with the TXT and CNAME dns records that you need to create in order for Okta to send emails with your domain without being blocked for spoofing. You can get more infraomtion about the setup from this article :
https://help.okta.com/en/prod/Content/Topics/Settings/Settings_Configure_A_Custom_Email_Domain.htm
We had some confusion concerning the instructions. It may be something that we should have known from the beginning, but I'd like to share in case anyone else encounters a similar issue. When Okta presents the CNAMEs and TXT updates for your DNS, do not just enter the hosts as listed. You want to drop the domain names because you are configuring these in a particular zone already. For example, if the CNAME states the host is "oktamail.yourcompany.com", you only want to enter "oktamail". The "yourcompany.com" is assumed at this point.