Caretaker Antispam for Exchange Server
Advantages | Comparison | Technology | Requirements | Downloads
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Solid and reliable defense against spam and phishing mails is an essential part of your network security.
Spammers constantly come up with new tricks and know how to defeat or fool filters based on Bayesian and fingerprint technology. That your employees gradually spend more time removing unsolicited and dangerous mails from their inboxes is proof of this.
Caretaker Antispam is an extremely effective and accurate spam filter which immediately isolates unsolicited and dangerous messages not just by analyzing mail content but also concentrates on reputation of senders and receivers. And when spammers send more spam they consequently improve the efficiency of Caretaker Antispam. |
Testimonials
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Advantages
An overview of the specific qualities and advantages of Caretaker Antispam for Microsoft Exchange Server:
- Zero tweaking, no settings or buttons, no training or ramp up period
Works immediately as advertised. Installs in under 2 minutes. Done. No looking back.
Your IT staff or users never need to tune the filter. - Central installation on Exchange Server
You do not need to install software on individual computers. - Multilayer scoring system combines the best of all worlds
Caretaker introduces new, innovative and improved but trusted filtering techniques to block spam, phishing, viruses, Trojans, worms, spyware and other malware. - Increased efficiency and smarter filtering when spammers send more spam
Our groundbreaking reputation technology is capable of accurately and efficiently block new spam runs and tricks. When spam networks send out more spam actually becomes an advantage. - Filters incoming messages on individual mailboxes and public folders
Reliable integration and delivery thanks to special Caretaker Antispam COM+ Application (Exchange 2000, 2003) and Caretaker Antispam Transport Agent (Exchange 2007). - Unsolicited and dangerous email messages are quarantined
Separate Spam folder for each mailbox and public folder. Your IT staff never spends time to look for missing messages because users have control over their own spam and restore possible false positives. - Also works seamlessly with POP3 Connectors
- Updates are automatically downloaded and installed
You do not need to schedule updates. When available, new parts of Caretaker Antispam are automatically updated without intervention of a system manager and while the Exchange Server stays online and available. - Solid support
Our software engineers also deliver direct support. They know everything and are ready for your questions. - Very low system resources
Requires just 35 MB disk space, dynamically uses between 45-85 megabyte RAM. Low processor usage.
High performance applications written in C++ with assembly parts. Does not require installation of Microsoft .NET Framework. - 100% native 64-bit version
Caretaker Antispam for Exchange Server 2007 and Small Business Server 2008 is 100% 64-bit (x64).
No 32-bit binaries on WOW64 emulation.
Comparison
| Spam filter | Spam Hit Rate | Ham Strike Rate | Price per mailbox | Anti-Virus |
| Caretaker Antispam for Exchange Server | 0,992 | 0,003 | € 14,55 | Prevx PE Analysis Blackhash |
| Barracuda Spam Firewall 200 (Appliance) | 0,956 | 0,003 | € 62,00 ± | Amavis ClamAV |
| Symantec Mail Essentials 6.0 Premium | 0,978 | 0,012 | € 19,36 | Symantec |
| Sunbelt Ninja Email Security 2.1.4503 | 0,934 | 0,013 | € 20,31 | Authentium BitDefender |
| Microsoft Office Outlook 2007 | 0,913 | 0,035 | - | - |
| GFI MailEssentials 12 | 0,784 | 0,246 | € 14,90 | Norman BitDefender |
The spam hit rate is the fraction of correctly identified spam (higher is better);
the ham strike rate is the fraction of misclassificed legitimate mail (lower is better).
All tests were conducted using default settings and with the same (historic) messages. In realtime tests other filters score worse.
Displayed prices are without VAT and based on a 1 year license for 25 users.
Technology
An overview of the smart technologies in Caretaker Antispam:
- Zero tuning, no training and no ramp up period
- Collective Spam Hit IP Reputation Analysis
- Content Analysis, detects (HTML) tricks like:
- Bad Word Obfuscation
- Punctuation Noise
- Noisy Style Elements
- Hyperlink Obfuscation
- Invisible Ink
- Bayesian algorithms
- Multithreaded IP, URL, Phishing and Domain Analysis using multiple (realtime) blacklists
- Email Intention Analysis
- Domain Tainting Analysis
- Link Abuse Detection to public Internet Search and Hosting websites like Google, Yahoo, Blogspot, Imageshack, etc.
- Keyword blocking (stock symbols, drugs, etc.)
- Image Analysis
- Multi-frame (Animated) Image support
- Otsu Adaptive Thresholding
- Skew Detection algorithm
- Accurate Optical Character Recognition (OCR)
- Stitched Images Analysis
- Hosted Image Analysis
- IP, URL, Domain and Bad Word Recognition and Probability Calculations
- Decompression of archives
- Decompression of password protected archives on messages with password in inline image (OCR)
- Multi-layer malware blocking
- Prevx Incremental Malware Detection (Community based protection, learns 7,000-10,000 new malicious objects every day)
- File Type Obfuscation Detection
- PE File Analysis to block suspicious and likely dangerous executable objects
- File format Analysis (PDF, XLS, RTF, HTML)
- Multi-rule scoring algorithms
- Hashcash support
- SPF support (Sender Policy Framework)
Requirements
Caretaker Antispam for Exchange Server supports the following versions of Microsoft Exchange:
- Microsoft BackOffice Server 2000
- Microsoft Exchange 2000 Server
- Microsoft Small Business Server 2003
- Microsoft Exchange Server 2003
- Microsoft Exchange Server 2007
- Microsoft Small Business Server 2008
Caretaker Antispam for Exchange Server 2007 and Small Business Server 2008 is 100% 64-bit (x64).
Availability
Caretaker Antispam for Microsoft Exchange Server is available now. Support for Exchange Server 2007 and Small Business 2008 is available as of July 1, 2008 