Hi Ami,
Firstly, just to check that you have the Custom Domain App? You get it with the Docebo Advanced and/or Enterprise plans. You used to be able to purchase it as an add on, but we’re not sure if that’s still the case.
This guide walks you through the initial set up: https://help.docebo.com/hc/en-us/articles/360020084060-Managing-the-Custom-Domain-App
There is one paragraph that tripped us up:
“For a third-level custom domain (an example of a third-level custom domain is subdomain.yourcompany.com or www.yourcompany.com), you will only need to provide a CNAME record, redirecting your third-level domain to yourcompany.docebosaas.com”
Because we needed our Docebo platform to be www and we were running Enterprise with multiple instances we created an A (@) record for the root domain to point to our Docebo IP address, and then a CNAME record to point www to our Docebosaas url. The structure of the URL is typically: yourcompany.docebosaas.com
We also added domain key records and email MX records to whitelist our emails so that our newsletters didn’t get blocked as spam by some email providers.
This may be more information than you were looking for, and if so, sorry! :) To get your IP address you could try Helpdesk or your account manager.
Fiona