-
- def canonical_email(email)
- local_part, domain = if email.nil?
- nil
- else
- email.split("@")
- end
-
- local_part.sub!(/\+.*$/, "")
-
- local_part.delete!(".") if %w[gmail.com googlemail.com].include?(domain)
-
- "#{local_part}@#{domain}"
- end
-
- ##
- # get list of MX servers for a domains
- def domain_mx_servers(domain)
- Resolv::DNS.open do |dns|
- dns.getresources(domain, Resolv::DNS::Resource::IN::MX).collect { |mx| mx.exchange.to_s }
- end
- end