Comodo Antispam Gateway

• Introduction To Comodo Antispam Gateway
  • Release Notes
  • Purchase License
  • License Information
• Get Started
  • Incoming Filtering Configuration
    • Configure Your Mail Server
    • Configure MX Records
      • Update MX Records In Windows 2003/2008 Server
      • Update MX Records On A Host Using BIND
      • Update MX Records For Comodo DNS
      • Update MX Records For GoDaddy
      • Update MX Records For Enom
      • Update MX Records For Network Solutions
      • Update MX Records For Yahoo! Small Business
      • Update MX Records For 1and1
      • Update MX Records For 4D Web Hosting
      • Update MX Records For DNS Park
      • Update MX Records For DreamHost
      • Update MX Records For DynDNS
      • Update MX Records For IX Web Hosting
      • Update MX Records For No-IP
      • Update MX Records In CPanel
  • Outgoing Filter Configuration
    • Per-User Authentication
    • Outgoing Smarthost Setup
      • Configure QMail To Use A Smarthost
      • Configure PostFix To Use A Smarthost
      • Configure Sendmail To Use A Smarthost
      • Configure Exchange 2000/2003 To Use A Smarthost
      • Configure Exchange 2007/2010 To Use A Smarthost
      • Configure Exchange 2013/2016 To Use A Smarthost
      • Configure Office 365 To Use A Smarthost
      • Configure Exim To Use A Smarthost
        • Configure Exim / CPanel To Use A Smarthost
        • Configure Exim / Directadmin To Use A Smarthost
    • DNS Configuration
• Login To The Admin Console
• The Dashboard Area
• The Admin Console
• Domain Management
  • Add A Domain
  • Delete Domains
  • Edit Domains
  • Validate Domains
  • Manage A Domain
    • Domain Dashboard
    • Incoming
      • Quarantine
      • Manage Archived Mails
      • Incoming Spam Detection Settings
      • Report Spam
      • Delivery Queue
      • Destination Routes
      • Local Recipients
      • Clear Incoming Cache
      • Log Search
      • Domain Aliases
      • Domain Settings
      • Manage Report Subscriptions For Selected Domain
      • Relay Restrictions
      • Geolocation Restrictions
      • SPF Control Settings
    • Outgoing
      • Clear Outgoing Cache
      • Log Search
      • Users
      • Office 365 Activation
    • Email Management
      • Email Size Restriction
      • Blocked Extensions
      • Released Requests
      • Blacklisted Requests
      • Whitelisted Requests
    • Domain Audit Log
      • Audit Log Configuration
      • View Domain Log
    • Domain Rules
      • Rules
      • TLD And GTLD Rules
      • Recipient Whitelist
      • Sender Whitelist
      • Recipient Blacklist
      • Sender Blacklist
      • Whitelist Senders Per User
      • Blacklist Senders Per User
    • Account Management
      • User Account Management
      • Manage User Auto-import
      • View User History
      • Import Users From LDAP
        • LDAP Import Configuration
        • LDAP Import Confirmation List
        • LDAP Import Ignore List
• Audit Log
• Administrator Account Management
  • Administrators
  • User Groups & Permissions
  • Admin Groups & Permissions
  • My Comodo Account
  • My Profile
  • Users History
• Customer Management
  • End User License And Subscriber Agreements
  • View License Information
  • Manage Report Subscriptions
  • Notification Email Settings
• CASG Reports - An Overview
  • Quarantine Report
  • Domain Statistics Report
  • Auto-Imported Users Report
  • Quarantine Release Report
  • Reported Spam Report
• Appendix 1 - CASG Error Codes
• Appendix 2 - CASG Comparison Table
• Appendix 3 -Troubleshooting LDAP
• Appendix 4 - Useful Links
• About Comodo Security Solutions

Blocked Extensions

• You can automatically block email attachments with specific file extensions.

• For example, you may want to block all attachments with a .exe extension because they may contain malware. Click here to see the complete list of extensions that you can block.

• Note – If you have enabled containment in 'Incoming' > 'Spam Detection Settings', then CASG will automatically block malicious files and attachments.

Add a blocked file extension

• Click 'Email management' on the left then click 'Blocked extensions'

The 'Blocked extensions' interface of the domain will open:

A list of default blocked extensions is displayed. You can sort the blocked extensions list alphabetically in ascending or descending order by clicking the 'Blocked extensions' title bar.

• Click the 'Add' button to include another blocked extension:

• Enter the extension name to be blocked in the text box.

You can add many extensions at a time by clicking the  icon.

• Click the 'Save' button.

The entered extensions will be added to the list.

• To delete an extension, select it from the list and click 'Delete' on the top-left.

An alert will be displayed to confirm to delete the selected extensions.

The selected blocked extension will be deleted from the list and email attachment with this file extension will be allowed provided it passes the size restriction filter.

• Click 'Reset to default' to restore default blocked extensions in CASG.
  

List of blocked Extensions