• Plesk 6.5 for Windows offers a complete interface redesign that eventually will become adopted by the Linux versions.
• Plesk 6.5 for Windows also manages Sub-domains as true in the domains root directory. New screens for Sub-domain configuration are in the Windows release which will also be adopted in the Linux versions.
• Plesk 6.5 for Windows includes a new security sessions management screen allowing the system administrator to view all users who have accessed the system and close their session if necessary.
• Plesk 6.5 for Windows and Plesk 6 support multiple IP addresses for the name-based hosting. Resellers can have a separate IP address assigned to them to provision the name-based hosting or one IP address can be shared by few Resellers.
• Plesk 6.5 for Windows uses an enhanced traffic management that allows its users to separately account for incoming and outgoing traffic on primary Internet protocols: HTTP, FTP, SMTP, and POP3/IMAP.
• New powerful component in Plesk 6.5 for Windows — Event Manager — simplifies integration of Plesk 6.5 for Windows with other systems. In response to the internal events (such as domain creation or traffic over usage by one of the customers) Plesk 6.5 for Windows can call external systems and automatically pass required data.
• A Global Changes feature allows Admins and Resellers to perform group operations on dozens of objects simultaneously.
• Domain Backup is available directly from the customer’s control panels allowing individual backups, downloads and uploads of backup files and restoration of the domain from a backup file.
• All new Action Log storing all customer activity in the control panel for Admin reference.

• Ensim Webppliance™
• Ensim Webppliance Pro™
• Sphera Hosting Director™
• Cobalt RaQ3 and RaQ4™
• Cpanel™
• Alabanza™
• and Custom Control Panels

Most likely at you it is installed Windows SMTP service. Disable or remove this service from your system.

To disable this service does the following actions:

• If you have Windows 2000:
1. Open console: Start\Settings\Control Panel\Administrative
Tools\Services,
2. Find service "Simple Mail Transport Protocol (SMTP)",
3. Open service’s properties,
4. Press the stop button if service is started,
5. Set service’s Startup type to Disabled.
6. Press Ok.
• If you have Windows 2003:
  1. Open console: Start\Administrative Tools\Services,
  2. Find service "Simple Mail Transport Protocol (SMTP)",
  3. Open service’s properties,
  4. Press the stop button if service is started,
  5. Set service’s Startup type to Disabled.
  6. Press Ok.

To remove this service does the following actions:

• If you have Windows 2000:
  1. Open console: Start\Settings\Control Panel\Add/Remove
  Programs\Add/Remove Windows Components\Internet Information Services (IIS)
  2. Clear checkbox "SMTP Service"
  3. Press Ok.
• If you have Windows 2003:
  1. Open console: Start\Control Panel\Add or Remove
  Programs\Add/Remove Windows Components\Application Server\Internet Information Services (IIS)
  2. Clear checkbox "SMTP Service"
  3. Press Ok.