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eSafe Advanced Anti-Spam Software & Services
Spam is growing rapidly. It is estimated that over 50% of today's business email is spam. Spam forces ISPs to cope with increasing amounts of email traffic, and the bandwidth of businesses is largely consumed by it, impacting resources and productivity. eSafe's advanced anti-spam services can block over 95% of spam with almost zero false positives!
Basic Anti-Spam Services
- Black lists - checks if the sending mail server is listed in various RBL (Realtime Blackhole List), dial-up or open-relay servers.
- DNS verification - checks if the sender is using a valid mail server.
- Keyword blocking - blocks spam according to keywords in subject and body.
- Anti-spoofing - blocks email masquerading as coming from within the organization - a common spam technique.
Cookies/web beacons - blocks email cookies which help spammers identify the recipient as a "live" email.
Header verifier - inspects various header signatures and blocks spam.
Advanced Anti-Spam Services
- Heuristic analysis - detects and blocks spam by various email characteristics.
- Textual analysis - categorizes spam according to textual content like mortgages, pornography, dental care, etc.
- Spam signatures - an auto-updating spam database allows detection and blocking of spam according to smart signatures.
- Spam URL filtering - blocks email with links to spam sources and sponsors.
- Spam image filtering - blocks email containing spam associated images.
- Auto-updating database - local or remote spam blocking database based on thousands of Spam collecting bots and web crawlers.
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