| File Extension: | VAC |
| File Type Description: | IMail Server Vacation Message File |
| File Type Developer: | Ipswitch, Inc. |
| Primary Associated Software: | Ipswitch IMail Server |
| Primary Software Developer: | Ipswitch, Inc. |
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IMail Server Vacation Message File files were originally developed by Microsoft Corporation for the Microsoft Windows software application. Website visitor analysis indicates that VAC files are commonly found on Windows 10 user machines, and are most popular in China. A vast majority of these users are opting to use Google Chrome as their preferred internet browser.
 | Microsoft Windows by Microsoft Corporation |
 | macOS by Apple |
 | MikuMikuDance by Yu Higuchi |
 | Ipswitch IMail Server by Ipswitch, Inc. |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .GSP | Ipswitch, Inc. | Web Files | IMail Error Message File |
| .SMP | MakeMusic, Inc. | Audio Files | SmartMusic Performance File |
| .IIM | Ipswitch, Inc. | Executable Files | iMacro Macro File |
| .WUP | Ipswitch, Inc. | Data Files | WhatsUp Gold Network Map File |
| .FWD | Ipswitch, Inc. | Data Files | IMail Server Forwarded Mail Message |
| .GSC | Activision | Game Files | Call Of Duty Game Script |
| .DSE | DAZ 3D | 3D Image Files | DAZ Studio Encrypted Script |
| .TMP | Mozilla | Backup Files | General Temporary File |
| .OPF | E-Book Systems | Data Files | FlipViewer FlipBook File |
| .DTD | Syncro Soft | Developer Files | Document Type Definition File |
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