Comodo KoruMail

• Introduction To KoruMail Secure Email Gateway
• Korumail Deployment Process
• Access The System
  • Access Via CLI Console
  • Access Via Web Console
  • The Main Interface
• The Dashboard
  • System Usage Graphics
  • About Software
  • Change Your Password
• User Management
  • Manage Admins And End Users
    • Manage Admins
    • Manage End Users
  • Manage Groups
• System Configurations
  • Network Configuration
    • Interfaces
    • Network Settings
    • Network Time Protocol (NTP)
    • Timezone
    • Static Routes
    • Simple Network Management Protocol SNMP
  • Services
  • Licenses
  • Configure System Settings
    • System General Settings
    • Cache Settings
    • Session Settings
    • GUI Customization
    • System Backup
    • System Restore
    • Log Upload Settings
    • Postmaster Settings
    • SMTP TLS Settings
    • Update Database
    • Syslog Server
  • Logs
    • Log Files
    • Purge Files
  • Tools
    • Check Connectivity
    • Clear SMTP Queue
  • Session Reports
  • System Usage Statistics
• SMTP Configuration
  • SMTP (Send E-Mail Protocol) Settings
    • General Settings
    • Advanced Settings
    • Outbound Delivery Queue
  • Manage Domains
    • Manage Domain Names
    • Manage Domain Routes
    • Manage Smart Hosts
    • Default Domain Routing
  • KoruMail SMTP AUTH Connector
    • SMTP Authentication Settings
    • Block Users
    • Anomaly Detection
  • LDAP/Local DB/My SQL User Database
    • LDAP Profile
    • Local DB Users
    • My SQL User Database
  • Greylist
    • Greylist Ignored IP Addresses/Domains
  • Manage RBL Servers
  • Disclaimer
  • SMPT Relay
  • DomainKeys Identified Mail (DKIM)
  • Outgoing SMTP Limits
  • Incoming SMTP Limits
• Modules
  • Anti-spam
    • Anti-spam General Settings
    • Authorized Trainers
    • Advanced Anti-spam Settings
    • Bayesian Training
    • Content Filter
    • Signature Whitelist
    • Attachment Filter
  • Anti-Virus
    • Anti-Virus General Settings
    • Advanced Anti-Virus Settings
  • KoruMail Reputation Network (KRN)
  • Anti-Spoofing
  • SMTP IPS/FW
    • SMTP IPS General Settings
    • Whitelist IP Addresses
    • Blocked IP Addresses
    • Rate Control
  • Auto Whitelist
  • Containment System
  • Data Leak Prevention (DLP)
  • Attachment Verdict System
• Profile Management
  • Add And Configure A New Profile
    • Edit A Profile
    • Delete A Profile
• Reports
  • Mail Logs Report
  • SMTP Queue Report
  • Delivery Logs Report
  • SMTP-AUTH Logs Report
  • Summary Reports
  • Domain Reports
  • Attachment Verdict Reports
  • Original Mail Requests
• Quarantine & Archive
  • Quarantine & Archive Settings
    • Quarantine & Archive General Settings
    • Email Reports Settings
    • Admin Email Reports Settings
  • Quarantine Logs
  • Archived Mails
• Appendix - KoruMail Versions
• About Comodo Security Solutions

Anti-Spoofing

• Email spoofing is a technique used to forge email headers so that the message appears to originate from a source other than the true sender.

• Email spoofing is possible because SMTP (Simple Mail Transfer Protocol) being the main protocol used in sending emails, does not include an authentication mechanism.

• The 'Anti-Spoofing' feature in KoruMail prevents spammers from sending messages with falsified 'From' addresses from your protected domains.

• It uses SPF records, which is a type of DNS record that identifies which servers are permitted to send emails on behalf of the protected domains.

• KoruMail allows you to add a range of IP addresses for a protected domain, which an MTA (Mail Transfer Agent) can look up to confirm whether an email is being sent from an authorized server.

To open the 'Anti-spoofing' interface

• Click the 'Modules' tab on the left, then click 'Anti-spoofing'.
  

• Select the 'Enable Anti-Spoofing' check box to add IP addresses for your domains.
  
  

Anti-Spoofing – Table of Column Descriptions
Column Header	Description
Domain Name	Displays the name of the protected domain.
IP Address	Displays IP range added for the domain.
Action		Allows administrators to delete a domain name.
		Allows administrators to edit the 'IP address' for a domain.
	Export	Allows to export the IP address for a domain.

The interface allows administrators to:

• Add IP range for a domain

• Edit IP range for a domain

• Delete a domain name from the list

• Export the list of IP addresses
  

To add an IP range for a domain

• Select the 'Enable Anti-Spoofing' check box

• Select the domain for which you want to add the IP range

• Click the  button

The 'Anti-spoofing Edit' screen will be displayed.

• To add the IP range manually, enter the address each per line in the field and click the 'Save' button.

• To import from a saved file, click the 'Import' link

• Click the 'Upload' button, navigate to the location where the file is saved and click 'Open'

• Repeat the process to add more files to the list.

• To remove a file from the list, click 'Clear' link beside it.

• To remove all the files, click 'Clear All' button at the top.

• Click 'Save'.

• Click 'Delete all' to remove all the addresses and click 'OK' in the confirmation screen.

• Click 'Save' to add the IP addresses for the domain.

To edit IP range for a domain

• Click the  button under the 'Action' column beside a domain name that you want to edit the IP addresses.

The 'Anti-spoofing Edit' screen will be displayed.

• Edit the address as required and click the 'Save' button.

To delete a domain from the list

• To delete a domain name from the list, click the  button under the 'Action' column and confirm it in the confirmation screen.

To export the list of IP addresses for a domain

• Click the 'Export' link under the 'Action' column
  

• Download and save the SPF IP list as a text file to your system.