Spam Filter for ISPs

A front-end for your incoming SMTP server
Spam Filter for ISPs is designed to be a front-end for your incoming SMTP server. Spam Filter for ISPs is a spam filter gateway

Spam Filter for ISPs receives all emails addressed to your domain(s) and checks if the sender is listed in one or multiple DNS-based block lists; if not, the email is passed on to your main SMTP server.

The administrator can configure which block lists to use, set allowed domains, filter by keyword and maintain a blacklist as well.

Main features:

  • SFDB - SpamFilter Distributed Blacklist
  • MAPS DNS RBL Filters
  • SURBL Filters
  • SPF - Sender Policy Framework
  • Bayesian Statistical Filtering
  • Image Scanning / Filtering
  • Blacklist IPs
  • Blacklist Domains
  • Blacklisted FROM Emails
  • Blacklisted TO Emails
  • Blacklist by Country
  • Honeypot Capabilities
  • Attachment Blocking
  • Keywords Filter
  • Reverse DNS validation
  • MX Record validation
  • Reject if "Mail From" = "Mail To"
  • Reject if "From Domain" = "To Domain"
  • Whitelist Domains / IPs
  • Deliver specific emails without filtering
  • Whitelist FROM Emails
  • List of "Authorized TO Emails"
  • SMTP User Authentication with SSL support

last updated on:
June 28th, 2014, 17:38 GMT
file size:
39.1 MB
developed by:
LogSat Software LLC
license type:
operating system(s):
Windows 2K / XP / Vista / 7 / 8 / 2003 / NT
C: \ Internet \ E-mail \ Anti-Spam Tools

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3 Screenshots
Spam Filter for ISPs - This is the main window of Spam Filter for ISPs that allows you to access all the features of the application and displays the activity log if enabled.Spam Filter for ISPs - Spam Filter for ISPs is able to display the blocked e-mail statistics by country filter, IP blacklist cache and greylist cache.Spam Filter for ISPs - The Settings tab of Spam Filter for ISPs will enable you to extensively configure the application's options.
What's New in This Release:
  • TODO -cFix : If a domain has multiple destination SMTP servers (for failover), and the first destination server is online but rejects the email with a 400 or 500 error, SpamFilter would not be able to forward the email to the failover server and would log an event "EMail from: user1@.... to: user2@.... -- was returned to sender - server error - Already connected.". This issue does not happen if the primary destination SMTP server is completely offline and not accepting SMTP connections
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