Email validations rejects valid email addresses

[siddharth-lakhara]

Support plan

• is this issue currently blocking your project? (yes/no): yes
• is this issue affecting a production system? (yes/no): yes

Context

• node version: 10.22.1
• module version with issue: 17.3.0
• last module version without issue: NA
• environment (e.g. node, browser, native): NodeJs
• used with (e.g. hapi application, another framework, standalone, ...): ExpressJs
• any other relevant information:

What are you trying to achieve or the steps to reproduce?

We are trying to verify emails using Joi. Following snippet demonstrates the way we are using Joi. The variable failingPayload contains the email address which Joi rejects. The email domain "dpllp.cpa" is valid

const joiSchema = Joi.object({
    emailAddress: Joi.string().email().required(),
  });
const failingPayload = {
  emailAdress: "username@dpllp.cpa"
};
Joi.assert(failingPayload, joiSchema)

What was the result you got?

We got validation error stating that the email address is invalid.

What result did you expect?

Since this email is valid. We expect Joi to pass this validation.

Additional Information

Looking at the API docs (here), we figured out that this validation uses IANA TLD list. However, the TLD CPA is present in (IANA TLD Directory)