added validation command

app/jobs/verify_emails_job.rb

@@ -1,7 +1,7 @@
 class VerifyEmailsJob < ApplicationJob
   discard_on StandardError
 
-  def perform(email:, check_level: 'mx')
+  def perform(email:, check_level: 'mx', single_check: false)
     contact = Contact.find_by(email: email)
 
     return logger.info "Contact #{email} not found!" if contact.nil?
@@ -11,7 +11,7 @@ class VerifyEmailsJob < ApplicationJob
     validate_check_level(check_level)
 
     logger.info "Trying to verify contact email #{email} with check_level #{check_level}"
-    contact.verify_email(check_level: check_level)
+    contact.verify_email(check_level: check_level, single_email: single_check)
   rescue StandardError => e
     handle_error(e)
   end

lib/tasks/verify_domain.rake

@@ -0,0 +1,29 @@
+require 'optparse'
+require 'rake_option_parser_boilerplate'
+require 'syslog/logger'
+require 'active_record'
+
+SPAM_PROTECT_TIMEOUT = 30.seconds
+
+task verify_domain: :environment do
+  options = {
+    domain_name: nil,
+    check_level: 'mx',
+    spam_protect: false,
+  }
+  banner = 'Usage: rake verify_domain -- [options]'
+  options = RakeOptionParserBoilerplate.process_args(options: options,
+                                                     banner: banner,
+                                                     hash: opts_hash)
+
+  
+  domain = Domain.find_by(name: options[:domain_name])
+  check_level = options[:check_level]
+
+  domain.domain_contacts.each do |dc|
+    dc.contact.verify_email(check_level: check_level, single_email: true)
+
+    Rails.logger.info "Validated contact with code #{dc.contact.code} and email #{dc.contact.email} of #{domain.name} domain"
+    Rails.logger.info "Result - #{dc.contact.validation_events.last.success}"
+  end
+end