Emails not being received by comcast.net

My company has an email server to send automated emails when the software we create is updated.

The emails come from transfrm.net.

Our main web site is transfrm.com or uluro.com.

We have this setup with SPF and DKIM signing.

We only recently setup the email server to send the emails.

Everything works when sending to our internal emails and other emails.

I have seen @CCAntiSpam knows how to help with this.

Thanks for any help