Inbound mail max. delivery time
The amount of time a message sits in incoming directory before being reset.
Maximum threads
The number of concurrent threads that will be used to move emails around. Some command line virus checkers do not function correctly with multiple instances running, so the MTA can be restricted to using one thread to resolve this.
Enable pickup event
When an email arrives, you are able to execute a program, and MailEnable will pass the mail message filename to the application. For example, if you write a VB script the adds some text to the end of each email that gets delivered, you would enable the pickup event. The command line used to execute the application is:
program messagefilename connectortype
Where program is the program filename, messagefilename is the name of the message file and connectortype is the type of messages (i.e. SMTP, LS, SF). Be aware that the directory path to the message is not passed to the program. You will need to read the directory path from the registry in the program file.
Logging Options
Produces a debug and activity log for the POP3 service. Use this if you need to get more details about what the service is doing (i.e. if you are debugging a problem).