FILExt - The File Extension Source

Details for file extension .MAILHOST are on this page. Because there is no central registry for file extensions and their associated programs there may be multiple entries on this page. And, because there are many (some say over a million) such associations not all may be listed here. A search on the file extension you submitted shows 1 record(s).

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The details for each of these are shown below. The best FILExt can do for you is provide the details we know about. Selecting the information that applies to your particular situation is up to you. Use any hints provided. If the information here is not helpful, FILExt is sorry; but as a research site FILExt cannot provide personal support. If you need further information you might try the research tips on the FILExt Help Me page.

Extension: MAILHOST
Program and/or Extension Function [What's This?]		Company [What's This?]
E-mail Server Preferences File		Microsoft Corporation
Specific Notes [What's This?]
If you are an MSN subscriber and having trouble with their service please contact MSN support for help. If you have a specific problem with the .MAILHOST file extension you can try this solution which has been confirmed by MSN to work: Click on the Start and then Run taskbar items. In the dialog box type: regsvr32 c:\progra~1\msn\msncorefiles\mailui.dll ...and then click on OK or press the Enter key (use cut/paste to be certain you've got it right). In case it wraps in your display, this is all one line with a space between the regsvr32 and pathname. This reregisters the mailui.dll file and solves the problem. If you are signed into MSN, sign out and then sign back in and everything should work OK. If, for some reason it does not, please go back to step one and contact MSN support. ..... [Search for MAILHOST file errors with this scan.]
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
MSMail.MessageList.View
General Notes [What's This?]
(None)
This is record 7040 last modified on 2005-02-02.

General Info

• If the extension you are looking for is of the form .??_ the file is likely a compressed file and part of an install routine. When the install program runs it will expand the file and replace the underscore with the proper letter for the file type.
• If the file is sent as an audio file with any three-character extension it may be a dictation file where the extension is the dictator's initials; playable by BCB Voice Systems software (see ??? extension). The file could likewise be a dictation file in TrueSpeech format. Use Windows Sound Recorder and/or Media Player to play these back.
• If the extension you are looking for has a number at the end or is only a number and there were no results consider entering the same extension format using zero or one as some programs produce numbered split files but when the split can be extensive (e.g., .000-.999) only the first entry is in the database.

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