changing the mailing provider.

[kelcheone]

I have been trying to find out how to change the mail provider from Sendgrid to something we are using internally. I'm not a Terraform guy but can't really find out how they plug into each other.

[timothymamo]

Hey @kelcheone, as you're using an internal mail provider you would probably have to create your own terraform module (which if you're not confident/familiar with I wouldn't suggest you do).

But if you've already got the mail server up and running, with the email sender created and verified, I'd suggest removing the SendGrid module and sendgrid variables (lines 72-85 and lines 195-211) as well as modify the remaining smtp variables (host/port/password/etc) accordingly to your internal server.

Once you've done that you should be all good to go (assuming I haven't forgotten something).

[kelcheone]

I think that is pretty much everything. But what is the purpose of the SendGrid module if we're not using SendGrid yet we are string provisioning it?

provider "sendgrid" {
  api_key = var.sendgrid_api
}

or is it used somewhere else that I don't understand?

[timothymamo]

Ah yes, you can remove the sendgrid provider too (both the required_provider section and the provider itself).

The way terraform works is with the use of providers (you can find the list of providers being used in the provider.tf file under the required_providers part). This is what terraform downloads when you run the terraform init command and stores them within the .terraform/providers/registry.terraform.io directory.

Some providers need tokens/api keys/access keys/etc to be used as they need to communicate via the providers api (in our case only the digitalocean and sendgrid providers need these. Other providers, like time and jwt don't, as they don't access any api, but are used to compute information/data which is needed to create resources.

Hope this helps.