Secure Email Attachment File Types

Secure Email Attachment File Types

Access: Everyone

OperaDDS - Secure Email Attachment File Types
Applies to: OperaDDS


File attachments in email are common threat vectors for malware. Executable files are not the only file type that can include threats. Below is a list of extensions that are not allowed through direct upload to OperaDDS Secure Email Attachments.

Note: Offices wishing to send a file from the list below should compress the file into a .zip file and upload that file, instead.

File Extension
File Type
Access Project (Microsoft)
Executable Application
Active Server Page
BASIC Source Code
Batch Processing
Internet Security Certificate File
Compiled HTML Help
DOS CP/M Command File, Command File for WIndows NT
Help file index
Windows Control Panel Extension (Microsoft)
Certificate File
csh Script
DER Encoded x509 Certificate File
Executable File
FoxPro Compiled Source (Microsoft)
Windows Vista gadget
Windows Help File
Project file used to create Windows Help File
Hypertext Application
Information or Setup file
IIS Internet Communications Settings (Microsoft)
IIS Internet Service Provider Settings (Microsoft)
Internet Document Set, Internet Translation
JavaScript Source Code
JScript Encoded Script File
UNIX Shell Script
Windows Shortcut File
Access Module Shortcut (Microsoft)
Access (Microsoft)
Access Diagram Shortcut (Microsoft)
Access Macro Shortcut (Microsoft)
Access Query Shortcut (Microsoft)
Access Report Shortcut (Microsoft)
Access Stored Procedures (Microsoft)
Access Table Shortcut (Microsoft)
Media Attachment Unit
Access View Shortcut (Microsoft)
Access Data Access Page (Microsoft)
Access Add-in (Microsoft), MDA Access 2 Workgroup (Microsoft)
Access Application (Microsoft), MDB Access Database (Microsoft)
Access MDE Database File (Microsoft)
Access Add-in Data (Microsoft)
Access Workgroup Information (Microsoft)
Access Wizard Template (Microsoft)
Microsoft Management Console Snap-in Control File (Microsoft)
.msh, .msh1, .msh2, .mshxml, .msh1xml, .msh2xml
Microsoft Shell
Windows Installer File (Microsoft)
Windows Installer Update
Windows SDK Setup Transform Script
Office Profile Settings File
Application virtualized with Microsoft SoftGrid Sequencer
Visual Test (Microsoft)
Windows Program Information File (Microsoft)
Developer Studio Build Log
Windows System File
Program File
MS Exchange Address Book File, Outlook Personal Folder File (Microsoft)
Registration Information/Key for W95/98, Registry Data File
Windows Explorer command
Windows Screen Saver
Windows Script Component, Foxpro Screen (Microsoft)
Windows Shortcut into a Document
Shell Scrap Object File
.ps1, .ps1xml, .ps2, .ps2xml, .psc1, .psc2
Windows PowerShell
Temporary File/Folder
Internet Location
VBScript File or Any VisualBasic Source
VBScript Encoded Script File
Visual Basic project file
VBScript Script File, Visual Basic for Applications Script
Visual Studio .NET Binary-based Macro Project (Microsoft)
Visio Workspace File (Microsoft)
Windows Script File
Windows Script Component
Windows Script File
Windows Script Host Settings File
Exchange Public Folder Shortcut
ADC audio file
Java class file
Java class file
Microsoft Windows Program Groups
Compressed archive file package for Java classes and data
MMS Composer File
ActiveX Control file
Perl script language source code
Silverlight Application Package

Printed copies of this document are considered uncontrolled.
39202.Rev002     04.21.2020

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