Add email verification rake task

app/models/email_address_verification.rb

@@ -1,14 +1,30 @@
 class EmailAddressVerification < ApplicationRecord
-
   RECENTLY_VERIFIED_PERIOD = 1.month
 
+  scope :not_verified_recently, -> {
+    where('verified_at IS NULL or verified_at < ?', verification_period)
+  }
+
+  scope :verified_recently, -> {
+    where('verified_at IS NOT NULL and verified_at >= ?', verification_period)
+  }
+
   def recently_verified?
     verified_at.present? &&
-      verified_at > Time.zone.now - RECENTLY_VERIFIED_PERIOD
+      verified_at > verification_period
+  end
+
+  def verification_period
+    self.class.verification_period
+  end
+
+  def self.verification_period
+    Time.zone.now - RECENTLY_VERIFIED_PERIOD
   end
 
   def verify
-    validation_request = Truemail.validate(email)
+    media = success ? :mx : :smtp
+    validation_request = Truemail.validate(email, with: media)
 
     if validation_request.result.success
       update(verified_at: Time.zone.now,