Embed Images are set to https://domain.com:80 in email

Yes

Since my let’s encrypt certificate is valid, I see my force_https set to true.

/var/www/discourse# cat config/discourse.conf |grep force_https
force_https = 'true'

Now, do I resolve this, https://domain.org:80 happening for smiley embeds, and email image embeds.
Something to do with my S3 instance https settting?