Local Listener AS2 Service reference

Resource Path
Defaults to /as2. Your trading partners must include this resource path in the URL when sending AS2 messages. You can change it at any time, but it must start with a forward slash (/) character. If you specify just a forward slash (/), the AS2 service is considered the default HTTP service, and any received message not matching any other HTTP service's resource path is automatically piped to the AS2 service. (This is primarily for compatibility with previous versions of the VersaLexCleo HarmonyCleo VLTraderCleo LexiCom application, which did not make use of resource paths for incoming messages.)
My External Address
The IP address used to access your computer or server from the Internet. This is the address where the VersaLexCleo HarmonyCleo VLTraderCleo LexiCom application is installed and running. 
This can be either a fully qualified host name (recommended) or a static visible external IP address.
You can use the Set Address button to set your external IP address.
Contact your systems administrator if you do not know your external IP address or fully qualified host name.

Advanced Feature: When you want an asynchronous MDN and you are using inbound port mapping on your firewall, you can specify the port where asynchronous MDNs should be received in the My External Address field. Enter the value in the form, address:port, for example, CLEO.DFICOMM.COM:80. This allows the asynchronous MDN requests to set the correct external address:port without adding/enabling that port in the Local Listener.  

Note: This entry will be overridden if you specify a non-zero Async MDN Preferred Port for the specific trading partner. See AS2 Host: Advanced Tab.
MDN Storage Folder
The folder where Message Disposition Notifications (MDNs) are stored. By default this directory is pre-defined to be a subdirectory under the VersaLexCleo HarmonyCleo VLTraderCleo LexiCom directory tree. Click …, navigate to a new path and folder, and click Apply.
Generate Filename Preservation MDN Responses
Select the Generate Filename Preservation MDN Responses option if you choose to check for duplicates of the same file name received from a specific trading partner. When selected, duplicate file names received from a particular trading partner within a desired number of hours, specified with the Retain Filename History property (the default value is 24 hours), will generate either a warning or error disposition in the MDN returned to the trading partner, depending on the setting of the Duplicate Filename Action. See AS2 Host Configuration for detailed information on the usage of the Filename Preservation feature.
Restarts Storage Folder
The Restarts Storage Folder is used as a temporary working directory for incoming files. If a trading partner requests a restart of a previous incomplete transfer, the file restart position is determined based on the temporary payload and corresponding property file in this directory. The temporary payload files are encrypted and the restart files are cleared once the transfer completes or 24 hours has passed. If the VersaLexCleo HarmonyCleo VLTraderCleo LexiCom application is being synchronized, the Restarts Storage Folder should be set to a shared location between all the synchronized VersaLexes because restart requests could come to any VersaLexCleo HarmonyCleo VLTraderCleo LexiCom instance.
Retain Message ID History
The number of days message ID history is retained for checking for and reporting duplicate messages (with the same Message-ID header value) from your trading partners. The default is 5 days.