有朋友往我的邮箱里面发了exe文件，也没有压缩下，这下麻烦了，被outlook封住了。因为安装微软的安全设定。类似于exe、vbs等文件都属于危险文件，outlook收了以后默认就把它封住。让你打不开。
要怎么解开限制，拿到需要的exe文件呢？其实也很简单。打开注册表编辑器找到：
HKEY_CURRENT_USERSoftware MicrosoftOffice11.0OutlookSecurity，右击右边空白选择“新建字符串值”，名字为“Level1Remove”，然后键入希望在 Outlook2003 中打开的文件类型的文件扩展名（如可执行文件“.exe”等），如果要指定多种文件类型，就可键入“.exe、.com”，中间用“;”分开。
如果你用的是Outlook2007，就到HKEY_CURRENT_USERSoftware MicrosoftOffice12.0OutlookSecurity里面新建注册表值。
重新启动Outlook以后，你就发现可以打开被封住的文件了。
类似的文件还有:
| File name extension | File type |
|---|---|
| .ade | Access Project Extension (Microsoft) |
| .adp | Access Project (Microsoft) |
| .app | Executable Application |
| .asp | Active Server Page |
| .bas | BASIC Source Code |
| .bat | Batch Processing |
| .cer | Internet Security Certificate File |
| .chm | Compiled HTML Help |
| .cmd | DOS CP/M Command File, Command File for Windows NT |
| .com | Command |
| .cpl | Windows Control Panel Extension (Microsoft) |
| .crt | Certificate File |
| .csh | csh Script |
| .der | DER Encoded X509 Certificate File |
| .exe | Executable File |
| .fxp | FoxPro Compiled Source (Microsoft) |
| .gadget | Windows Vista gadget |
| .hlp | Windows Help File |
| .hta | Hypertext Application |
| .inf | Information or Setup File |
| .ins | IIS Internet Communications Settings (Microsoft) |
| .isp | IIS Internet Service Provider Settings (Microsoft) |
| .its | Internet Document Set, Internet Translation |
| .js | JavaScript Source Code |
| .jse | JScript Encoded Script File |
| .ksh | UNIX Shell Script |
| .lnk | Windows Shortcut File |
| .mad | Access Module Shortcut (Microsoft) |
| .maf | Access (Microsoft) |
| .mag | Access Diagram Shortcut (Microsoft) |
| .mam | Access Macro Shortcut (Microsoft) |
| .maq | Access Query Shortcut (Microsoft) |
| .mar | Access Report Shortcut (Microsoft) |
| .mas | Access Stored Procedures (Microsoft) |
| .mat | Access Table Shortcut (Microsoft) |
| .mau | Media Attachment Unit |
| .mav | Access View Shortcut (Microsoft) |
| .maw | Access Data Access Page (Microsoft) |
| .mda | Access Add-in (Microsoft), MDA Access 2 Workgroup (Microsoft) |
| .mdb | Access Application (Microsoft), MDB Access Database (Microsoft) |
| .mde | Access MDE Database File (Microsoft) |
| .mdt | Access Add-in Data (Microsoft) |
| .mdw | Access Workgroup Information (Microsoft) |
| .mdz | Access Wizard Template (Microsoft) |
| .msc | Microsoft Management Console Snap-in Control File (Microsoft) |
| .msh | Microsoft Shell |
| .msh1 | Microsoft Shell |
| .msh2 | Microsoft Shell |
| .mshxml | Microsoft Shell |
| .msh1xml | Microsoft Shell |
| .msh2xml | Microsoft Shell |
| .msi | Windows Installer File (Microsoft) |
| .msp | Windows Installer Update |
| .mst | Windows SDK Setup Transform Script |
| .ops | Office Profile Settings File |
| .pcd | Visual Test (Microsoft) |
| .pif | Windows Program Information File (Microsoft) |
| .plg | Developer Studio Build Log |
| .prf | Windows System File |
| .prg | Program File |
| .pst | MS Exchange Address Book File, Outlook Personal Folder File (Microsoft) |
| .reg | Registration Information/Key for W95/98, Registry Data File |
| .scf | Windows Explorer Command |
| .scr | Windows Screen Saver |
| .sct | Windows Script Component, Foxpro Screen (Microsoft) |
| .shb | Windows Shortcut into a Document |
| .shs | Shell Scrap Object File |
| .ps1 | Windows PowerShell |
| .ps1xml | Windows PowerShell |
| .ps2 | Windows PowerShell |
| .ps2xml | Windows PowerShell |
| .psc1 | Windows PowerShell |
| .psc2 | Windows PowerShell |
| .tmp | Temporary File/Folder |
| .url | Internet Location |
| .vb | VBScript File or Any VisualBasic Source |
| .vbe | VBScript Encoded Script File |
| .vbs | VBScript Script File, Visual Basic for Applications Script |
| .vsmacros | Visual Studio .NET Binary-based Macro Project (Microsoft) |
| .vsw | Visio Workspace File (Microsoft) |
| .ws | Windows Script File |
| .wsc | Windows Script Component |
| .wsf | Windows Script File |
| .wsh | Windows Script Host Settings File |
| .xnk | Exchange Public Folder Shortcut |
Refer:
http://office.microsoft.com/en-us/outlook/HA012299521033.aspx