Check your system temp directory.

Notes/Domino 8 Forum

Subject:

Something to try: look in your system temp directory (e.g., often C:\tmp or C:\temp on Windows systems).

Are there zillions of files with this name pattern: STnnnnnn.TMP (where nnnnnn is a random six digit number)?

When the SMTP server accepts an incoming Internet message, it stores the message in an in-memory object for parsing. However, if the incoming message is bigger than about 50KB, the object switches its backing store from an allocated memory block to a system flat file.

These file stores are named as outlined above and are usually stored in the system temp directory. One possibility is that your system temp directory is on another disk volume and you're out of space there.

Another possibility is that there are many 'dead' STnnnnnn.TMP files that were not correctly deleted. If there are tens or hundreds of thousands of these, you may be seeing the result of "name collisions" as the SMTP server attempts to create the temporary file store, but cannot because it cannot create a new, unique name for the file store.

If there are an inordinate number of STnnnnnn.TMP files in your temp directory, you can safely delete them if you shut down the Domino server.

Feedback response number PLYS965Q89 created by ~Judy Umluvitchakoi on 03/25/2013