I have a doubt setting up my SPF record. I would like to know if I set up an include record in the SPF record will also be "including" the subdomains of that principal domain that I have included?.
Let's take a look of an example in my doubt:
Example:
v=spf1 +include:example.com -all
Does this "+include:example.com" will be covering up also if my mail is sent from subdomain1.example.com or subdomain2.example.com ???
I really appreciate your comments.