Packages
Simple library checking the validity of an email. Checks are performed in the following order: - REGEX: validate the emails has a good looking format - MX: validate the domain sever contains MX records - SMTP: validate the SMTP behind the MX records knows this email address (no email sent)
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lib/email_checker/check/mx.ex
defmodule EmailChecker.Check.MX do
@moduledoc """
Check if an emails server has a valid MX record.
"""
alias EmailChecker.Tools
@behaviour EmailChecker.Check
@doc """
Check if an emails server has a valid MX record.
## Parameters
* `email` - `binary` - the email to check
## Example
iex> EmailChecker.Check.MX.valid?("test@gmail.com")
true
iex> EmailChecker.Check.MX.valid?("test@invalid-domains-foobar.com")
true
"""
@spec valid?(String.t) :: boolean
def valid?(email) do
email
|> Tools.domain_name
|> Tools.lookup
|> present?
end
defp present?(nil), do: false
defp present?(string), do: String.length(string) > 0
end