Notes about the RMD file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The RMD file type is primarily associated with 'IMail Server' by Ipswitch, Inc.. IMail Server is a scalable, standards-based (POP3/IMAP4/SMTP) E-mail server with protection from spam and viruses. This extension indicates regular mail messages being processed by SMTP.