Information about the .bad (bad) file type

This is one of two possibilities that we have on file for the .bad file extension, follow this link to view both possibilities.

Below is all the information we have available on file about the .bad (bad) file type.

A non-delivered email. A .bad file is an email file that the Windows SMTP server has been unable to deliver.

Whilst each virtual SMTP server generates .bad message in its own separate Badmail folder, these .bad files are typically located in:

C:\Program Files\Exchsrvr\Mailroot\vsi 1\BadMail
On systems running Microsoft Exchange server.
On Windows systems not running Exchange server.

For each .bad file in the Badmail folder there will be a corresponding .bdp and .bdr file. The .bad, .bdp and .bdr files can be deleted (but this will obviously lose the information they contain).

The .bad file is a renamed .eml file, and its content may be viewed by renaming to to .eml and then opening it using a suitable email client.

The following link provides further information related to the .bad file extension:

Where this is available we would like to include file format information on .bad files, as well as information on how to view or open files of type .bad. If you know of any information which we have missed then please let us know.