Purpose of these files and can they be deleted
Resolving the problem
"as2q.dat" and "sm.dat" are WPG Express specific files. These files
are used by WPG Express to keep track of pending transactions and also
for the request for which the MDN needs to be sent and received. Also,
the configuration information for that particular transactions. It also
stores the order in which the ASync/Sync MDN needs to be sent if we have
received multiple inbound requests at the same time.
WPG Express does not use any database to store the file details, so this
information is stored in the file system using these files.
Files can be deleted, the appropriate file(s) will get recreated when the next document is sent.