Download Shareware and Freeware Software for Windows, Linux, Macintosh, PDA

line Home  |  About Us  |  Link To Us  |  FAQ  |  Contact

Serving Software Downloads in 976 Categories, Downloaded 29.879.289 Times

ASK - Active Spam Killer 2.5.3

  Date Added: May 11, 2010  |  Visits: 743

ASK - Active Spam Killer

Report Broken Link
Printer Friendly Version


Product Homepage
Download (75 downloads)



ASK is a spam killer. This program (Active Spam Killer, or ASK for short) takes an "Active" approach in solving the problem: Everytime an email is received, a message is sent back to the sender asking for confirmation. If that sender does not confirm the message, it remains queued for delivery. If the sender confirms, the message is delivered and removed from the queue. The "confirmed" senders will be added to your "whitelist" and will never be sent another confirmation. Messages from these emails will always be delivered immediately . You can also specify an "ignorelist" for emails that should be always ignored and a "blacklist" that will cause a nastygram to be sent back to the sender everytime an email is received. There are many traditional approaches to avoiding spam. The most common approach is based on "content-filtering": a program that attempts to classify incoming mails based on their content. This works partially, but in reality, its somewhat easy to find ways to avoid it. ASK takes advantage of the fact that most spammers use invalid or fake "From:" address in their messages. When a new message arrives and the sender is unknown, ASK sends a "confirmation message" back, informing the sender that the original message has been queued, pending confirmation. When the sender confirms (a simple reply), ASK delivers the original message and adds the sender to a "whitelist". Further messages from this sender will be immediately delivered. It is also possible to ignore messages based on specific criteria, like senders email, subject and so on. The goal of ASK is to block Spam mail before it is delivered to your mailbox. As we know, filtering alone is not effective since many times Spam mail contains no detectable elements. ASK should be invoked from .forward (or .procmailrc if you are using procmail). The incoming message should be piped to ASK, which will be in charge of doing the actual delivery. When ASK receives an email, if first checks the email address against your "ignorelist". If the address is listed there, its ignored completely. Then, the message is checked against your "blacklist". If its there, a nastygram is sent back to the sender with something like "Please stop sending me emails" in the Subject line. The real fun happens when an email comes from an unknown user (i.e, someone not in any of your lists). In this case, ASK calculates the MD5 checksum of the message + a secret MD5 key (configured during installation time). This number is sent as part of a "confirmation message" back to the user. If the user replies to it, the confirmation number (in the subject) is recognized, the message is dequeued and delivered. If the user does not reply, the message remains queued until its removed. The program has some intelligence to deal with specific cases. For instance, if a mail is sent to a non-existing user, the error message from mailer-daemon is ignored. This avoids seeing lots of "invalid user" messages in your inbox. Another interesting "twist" is that messages coming from your own email address are never trusted. If the spammer knows your address he could easily fake your own address as the From: line. Messages coming from you will be identified by a "mailkey", a piece of string you always put on your message by default (maybe a piece of your own signature). Note that this has the added side-effect of allowing any messages coming in reply to a message you sent to someone (as long as that person keeps your "mailkey" in its quoted reply, a practice common these days). The program never deletes any messages. For instance, if you send yourself a message without your mailkey (a possible Spam), it will be saved in a "Junk" mailfolder (you can specify this folder during the configuration).. Active Spam Killer (ASK)

Requirements: No special requirements
Platforms: Linux
Keyword: Active Ask Back To The Killer Message Messages Monitoring Sender Spam Spam Killer System Will Be
Users rating: 0/10

License: Freeware Size: 92.16 KB
USER REVIEWS
More Reviews or Write Review


ASK - ACTIVE SPAM KILLER RELATED
Simulation Games  -  Cosmos of Methos 0.3.36
Cosmos of Methos is a game which brings you back to the world of the Ancient Times. You are placed behind the wheel of a Hellenik Trireme, of a Phoenecian trade-ship or a Skythian pirate ship. Nevertheless, you have equally the oportunity to...
100.35 KB  
Games  -  Back to the Sea: Operation Clam Shake 1.6
Keep your eye on the pearl! That is ... if you think you can! Three immersive gameplay modes, fast/challenging/insane make this an exciting game that will challenge both young and old. Based on the hit family film "Back to the Sea", Kevin...
98.8 MB  
Education  -  Back to the 80s Free 2.0
"I Pity da Fool!" "Where's the Beef" "Anyone, Anyone?" "Wax on Wax Off." Go back in time and relive the radical 80s with Back to the 80s! It's Totally Awesome, Dude! This is the FREE version and includes 9 buttons with classic 80s...
2.1 MB  
Games  -  Back to the Bird 1
FLY THE OTHER WAY! "Unbelievable!" Do you think you can score -100 points? Are you ready to (literally) go back in time and space? If the answer to these questions is yes, you can't miss Back to the Bird ! Find where it all...
3.2 MB  
Entertainment  -  Back to the Bricks 1.1
The Official App of Back to the Bricks in Flint, Michigan. Find out what's happening on the bricks, enter fun contests, get great deals from local businesses and more. Back to the Bricks is the premier car show in Genesee County and...
28.5 MB  
Games  -  Caveman Crush: Smash the Neanderthal Cavemen Back to the Stone Age 1.1
Caveman Crush: Smash the Neanderthal Cavemen Back to the Stone Age is the newest addition to your list of fun whack games! Use the cursor as a club, and wield it to crush cavemen as they pop up from their cave-holes. 100 seconds per round is given...
17.3 MB  
Games  -  Caveman Crush: Smash the Neanderthal Cavemen Back to the Stone Age (for iPad) 1.1
Caveman Crush: Smash the Neanderthal Cavemen Back to the Stone Age is the newest addition to your list of fun whack games! Use the cursor as a club, and wield it to crush cavemen as they pop up from their cave-holes. 100 seconds per round is given...
17 MB  
Social Networking  -  BACK TO THE BIBLE FOUNDATION 1.0.0.0
Mobile private network for BACK TO THE BIBLE FOUNDATION. The app is dynamically configurable and offers multiple modules such as Events, Meetings, Services, News, Chats, Contacts and a Member Directory. If you do not yet have a user name and...
1024 KB  
Utilities  -  HandWriteMemo 1.2
I write quickly when you want to write. It is an app that easily take notes. Until I get back to the home screen also notes that disappear at a time can be recovered! Note that you save important notes in the priority display and...
3.5 MB  
Games  -  Hover Bird HD 1.0.1
Winter is over and Hover Bird visit to his cousins in the North is over. It is Time for him to fly back to the South Pole. Because Hover Bird is a Penguin he will need assistance from his helicopter blades. Since winter is over all the birds that...
18.8 MB  
NEW DOWNLOADS IN LINUX SOFTWARE, UTILITIES
Linux Software  -  Polling Autodialer Software 3.4
ICTBroadcast Auto Dialer software has a survey campaign for telephone surveys and polls. This auto dialer software automatically dials a list of numbers and asks them a set of questions that they can respond to, by using their telephone keypad....
488 B  
Linux Software  -  Total Video Converter Mac Free 3.5.5
Total Video Converter Mac Free developed by EffectMatrix Ltd is the official legal version of Total Video Converter which was a globally recognized brand since 2006. Total Video Converter Mac Free is a free but powerful all-in-one video...
17.7 MB  
Linux Software  -  Skeith mod_log_sql Analyzer 2.10beta2
Skeith is a php based front end for analyzing logs for Apache using mod_log_sql.
47.5 KB  
Linux Software  -  SLAX 6.0+
Slax is a modern, portable, small and fast Linux operating system with a modular approach and outstanding design. Despite its small size, Slax provides a wide collection of pre-installed software for daily use, including a well organized graphical...
190 KB  
Linux Software  -  GTK+ 2.5
GTK+, which stands for the GIMP Toolkit, is a library for creating graphical user interfaces for the X Window System. It is designed to be small, efficient, and flexible. GTK+ is written in C with a very object-oriented approach. Language bindings...
60 MB  
Utilities  -  LPAR2RRD 4.95-4
LPAR2RRD collects performance data and generates actual, historical and future trends utilization graphs of your virtual environment. It is agentless (it receives everything from the management stations like vCenter or HMC). The product supports...
2.25 MB  
Utilities  -  Nessconnect 1.0.2
Nessconnect is a GUI, CLI and API client for Nessus and Nessus compatible servers. With an improved user interface, it provides local session management, scan templates, report generation through XSLT, charts and graphs, and vulnerability trending.
819.2 KB  
Utilities  -  Dynamic Power Management 2.6.16
The Dynamic Power Management (DPM) project explores technologies to improve power conservation capabilities of platforms based on open source software. Of particular interest are techniques applicable to running systems, adjusting power parameters...
30.72 KB  
Utilities  -  Ethernet bridge tables 2.4.37.9
Ethernet bridge tables - Linux Ethernet filter for the Linux bridge. The 2.4-ebtables-brnf package contains the ebtables+bridge-nf patch. Be sure to check out the ebtables hp. This site also contains the arptables userspace tool.
40.96 KB  
Utilities  -  SaraB 1.0.0
SaraB works with DAR (Disk ARchive) to schedule and rotate backups on random-access media (i.e. hard drives, CDs, DVDs, Zip, etc. Basically anything except magnetic tapes.) This reduces hassle for the administrator by providing an automatic backup...
20.48 KB