Files that contain the .dlm file extension are commonly associated with the Adobe Download Manager and the Akamai Download Manager applications.
When the Adobe Download Manager or the Akamai Download Manager is in the process of downloading a file, the file is temporarily saved with the .dlm file extension during the download process. Once the file has completed downloading from the Internet, the .dlm extension is removed and the proper file extension is assigned to the file.
The FileMaker Pro software application also uses the .dlm file suffix. These DLM files contain data files that are referenced by the FileMaker Pro application.
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If you have additional information about the DLM file format or software that uses files with the DLM suffix, please do get in touch - we would love hearing from you.