MetaDefender Email Gateway Security 4.7.9 4 Operating MetaDefender Email Gateway Security 4.1 Dashboard 4.2 Security rules 4.3 Quarantine 4.4 Email history 4.5 Refused emails 4.6 Specific email headers 4.7 Support for password protected attachments 4.8 Support for signed emails 4.9 Integration with MetaDefender Vault 4.10 Search 4.11 Config history