Object Architecture

• Language: MailListBot was entirely written in C++ using Microsoft Visual C++ version 6.0 SP5. The component uses ATL (Active Template Library) version 3.0.
• Age: MailListBot has been in active development for over 3 years.
• Registry: Does not write values to the registry. Reads registry for DNS server values if none provided while performing email address verification.
• Filesystem: MailListBot can create and write to files in the filesystem. If these properties are used in a web server environment, ensure that your web server user "IUSR_MACHINENAME" has permission to create and write to the appropriate directories. The following properties utilize the filesystem:
  • SetLogFilename - If not specified, a log file named "log.txt" is created in the system temp folder (using the %TEMP% environment variable). The log file can be completely turned off with the SetNoLogFile=True property.
  • SetGoodEmailFile - No file created if not specified. If specified, MailListBot will attempt to create the file.
  • SetBadEmailFile - No file created if not specified. If specified, MailListBot will attempt to create the file.
  • SetSuspectEmailFile - No file created if not specified. If specified, MailListBot will attempt to create the file.
  • Other - If using HTML formatted email features, MailListBot will create temporary files in the system temp directory to store html and images for sending.
• Dependencies:
  • ATL.DLL - MailListBot uses ATL (Active Template Library) which requires ATL.DLL to be installed in the system folder.
  • MFC42.DLL - Version 6.x. This dll is included in the MailListBot installation program.
  • MSVCRT.DLL - Version 6.x. This dll is included in the MailListBot installation program.
  • WS2_32.DLL - Version 5.x. This dll is standard on Windows after Windows 95. Windows 95 users need to have dial-up networking installed.
• Installed Files: The MailListBot installation package comes with numerous files. Out of all the files, five are integral and required for MailListBot to operate properly:
  • MailListBot.dll - The component that is registered on your computer.

    Dependencies. The following files must be installed in a directory that is accessible by the PATH or in the same directory as MailListBot.dll. Each of the files are standard DLLs that do not need to be registered:

    • BotDll.dll - Utility functionality.
    • DBDll.dll - Database functionality.
    • MailDll.dll - Mail protocol functionality.
    • MailListBotDll.dll - Wraps MailDll.dll functionality into higher level functions.
  • Help files - The included html help files are optional.
  • ASP Example files - The included ASP example files are optional.
• RFC Standards: Protocols and standards followed:
  • 821 The SMTP protocol
  • 822 Standard for the format of ARPA Internet text messages
  • 974 Mail routing and the domain system
  • 1869 SMTP Service Extensions (ESMTP) (Obsoletes RFC1651)
  • 1891 SMTP Service Extension for Delivery Status Notifications
  • 2045 Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies.
  • 2046 Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types.
  • 2047 MIME (Multipurpose Internet Mail Extensions) Part Three: Message Header Extensions for Non-ASCII Text.
  • 2554 SMTP Service Extension for Authentication
• Memory Leaks: MailListBot has no known memory leaks.