Free recipient software for linux

MailRecon is Unix email content control application. It does listen network traffic, capture SMTP messages, analyse it (checks against very flexible and extendable checklist), discards usual private/business messages and save suspicious messages for detailed inspection by security staff.
Main features:
- Capturing email messages from the wire. So its compatible will all mailing software, do not require any reconfiguration and captures messages even if its sent directly to recipient bypassing your mailserver.
- Support for SMTP and POP3 protocols.
- Very flexible mailing filter which goes with MailRecon allows to record only suspicious messages which worth to be examined, and skip usual private and business messages.
- Open Architecture. MailRecon supports plugins for analysis and save of messages. Its very easy to extend its functionality with new plugins - every programmer and system administrator can write it.
- Thanks to Open Architecture, you can use your favorite mail reader or browser to manage archive of captured suspicious messages.
- For limited time, WWW-Security offers free installation and support of evaluation versions on your servers.
- FREE evaluation version which is never expires!
Installation:
- Create user mailrecon and groups mailrecon and mail
- From installation directory run "make install" (as root)
- Copy init.d/mailrecon to your init.d directory and optionally create symlinks from rcN directories if you want to automatially start mailrecon on boot.

qgreylistrbl is an add-on for qmail.

Now there are a lot of methods against spam, I have combined two of them: greylisting only for dialin nodes and nodes listed on a RBL. NDNs with more than one recipient will be rejected with permanent error messages and without a greylist entry. A test for EHLO/HELO spoofing was added: if a string is obviously spoofed, the connection will be rejected with a permanent error message, without a greylist entry, and advice to RFC2821. You can define a maximum number of recipients per email.

Greylisting returns a temporary SMTP error at the first delivery attempt. Most spam is sent from bulk mailers that dont retry, so these attempts are blocked. Real mail servers will retry later after a temporary error, allowing the message to go through.

Of course cannot all mail be delayed half an hour or longer to our customers. Thats why I have decided to modify the program qgreylist from Jon Atkins. I have added a RBL request to accept emails from not RBL listed nodes and to delay only dialin lines and RBL listed nodes. The script tests the PTR record of each connecting host for a regular expression to detect dialin nodes.

qgreylist from Jon Atkins puts all files in one base dir. qgreylistrbl creates here a directory structure because of performance reasons. The cleanup is now done by a separate cronjob script and not by qgreylistrbl itself, because when there were some ten thousand files inside the mail server nearly stands still.

Most bulk mailers and zombies,too, do not have queue management. They blast that much emails out into the net, they would be swamped with it. An Example: We use a UW-160 Raid 10 for the queue, but the usual zombie out there has only one IDE disc. Beside even a layman would ask why his hard drive was running all the time.

Effect

80% less spam. Yes, truly. No false positives, NO email gets lost.

Usage

qgreylistrbl is a replacement for rblsmtpd by D.J. Bernstein. Simply put qgreylistrbl instead of rblsmtpd in the command line for starting qmail-smtpd.

Performance

qgreylistrbl is a Perl script. Expect some CPU usage. If you run a QMAILQUEUE-patched version of qmail-smtpd and spamassassin, the load will decrease extensive, because most connection attempts do not cause a mail delivery. With perl > 5.6.1 you can precompile the source code with perlcc.

Installation:

Just copy the perl script wherever you want and edit the start script for qmail-smtpd. qgreylistrbl is a simple replacement for rblsmtpd from D.J. Bernstein and can be used the same way.

Create the greylist IP folder:

# mkdir /var/qmail/qgreylistrbl
# chown qmaild /var/qmail/qgreylistrbl

Adjust User

If you need to install the perl module Mail:RBL, just do the following:
From the root prompt on your server, invoke the CPAN shell:

# perl -MCPAN -e shell

Once the Perl interpreter has loaded (and been configured), you can install modules by issuing the command install MODULENAME.

The first thing you should do is upgrade your CPAN:

cpan> install Bundle::CPAN

Once its done (it will take a while, just enter all questions), type:

cpan> reload cpan

Now, enter the following command to retrieve all of the required modules:

cpan> install Mail::RBL

Then you can be shure everything is installed to correct locations.

Configuration:

At the beginnung of the script you have to adjust a few variables. See script for more details. Important are hostname, working directory, some paths and RBL services. You have to add a crontab entry as follows:

*/20 * * * * vpopmail /var/qmail/bin/qgreylist_cleanup.pl

Adjust user, path and time before.
Dont forget so set up logging facility in /etc/syslog.conf

Iopo4ta is a new Internet post system that combines email and Web site technologies. The project overcomes limitations in the SMTP protocol by removing the need to transfer the message itself. Instead, messages stay on the senders server until the recipient picks it up.
This means that the recipient only needs to be sent a notification that contains the address of the sender and message identification data. This helps to eliminate spam and enables new and interesting features.
Enhancements:
- Protocol, server and client software.
- The Ipo4ta-protocol was optimised.
- The specification version 0.6(candidate) is now available.
- The server was totally redesigned according to the new version of specification.
- Server improvements: message caching was added.
- Admin interface improvements: one-step new user registration (folders and permissions are automatically created).
- Web-client GUI improvements: forum view optimisation.

smf-grey is a Sendmail milter that implements the GreyList Anti SPAM technology.
This technology can significantly reduce the amount of SPAM and viruses going from zombie computers (infected Windows PC), which produce more than 80% of SPAM.
GreyList Sendmail milter has a very effective GreyList algorithm on the base of the tuple: sender IP address (C class subnet), sender envelope and recipient envelope.
Its very recommended to use the smf-grey milter combined with the smf-zombie and the smf-spf milters. Its a triple impact on SPAM and viruses, that will seriously increase the efficiency of filtration.
This milter aims to be lightweight, reliable and simple. Its written in C.
Main features:
- It has a hosts/networks whitelist;
- It has an autowhitelist;
- It can add the information header with GreyList results to scanned messages;
- It can log all milter activities through the syslog service.
Advantages:
- Small code;
- Fast work;
- Stability (production quality);
- Few system resources are required.
Enhancements:
- Whitelists auto reloading was implemented.
- Autowhitelisted records regular dumping and reloading was implemented.
- The default greylisting time period was increased.
- New TODO tasks were added.
- Cosmetic enhancements were made.

Firefly Casino is a casino client and server framework designed with security in mind.

The client aims to be multi-platform and there are plans to include the major casino games like slots or black jack.

Actual stage... Theres avaiable for download an alfa stage of firefly casino (the first fork from vcasino).

I work freelance so any time spent on Firefly Casino is time I am not doing paid work for someone else, and sometimes thats a lot of time! This includes continuing development as well as answering queries and providing support to current and prospective users.

Therefore if you would like to see Firefly Casino ready and have found it an useful ideia, and maybe feel like giving something back and contributing to the cause then please feel free to click on one of the donate links.

The more that is donated the more time I can spend making Firefly Casino even better for everyone. If, on clicking one of the links you are asked for an email address for the recipient please choose djsb@neonisp.com. I thank you in advance for your contribution.

Free Digital Money projetc is aimed at promoting ideas and stimulating further innovation in the field of digital bearer money.
Digital bearer money is like cash and can be transferred person-to-person without going through a bank or PayPal account.
Scope
The scope of this project is necessarily limited; digital bearer money schemes are difficult to implement.
The project will develop and release a Digital Money system and applications, suitable for teaching and idea-testing.
The current release (V0.2) delivers a basic digital PGP-based coin system.
The next release will provide a transport mechanism to send the coins to an intended recipient; and a client application (a Wallet).
How You Can Help
We welcome technical help in a variety of forms:
- Application writers and visionaries: to use the FreeDMoney software to experiment with new ideas
- Coders: to extend the current software or to implement a completely new payment system
- Vendors of existing digital payment schemes: to implement a FDM interface to their code
Educational Usage
Students (and others) are welcome and encouraged to use FreeDMoney as a basis for discussing other considerations of building a secure payment systems.
Examples:
- What technical peer-review process would be required to be confident in the security of the system?
- What are the limitations in the model that would need to be overcome in order to make this into a technically sound basis for a real-world, real-value payment system?
- Assuming these limitations had been overcome, what operational considerations would need to be addressed to deliver a secure, reliable payment system?
- How do existing payment systems address these issues?
What legal and regulatory issues would need to be addressed in the target jurisdictions?
Enhancements:
- Initial Coin implementation and "test bank" Web application.

Penguin Greetings is a Perl Web-based greeting card application. Penguin Greetings is two products wrapped into one. Penguin Greetings is an engine for handling web "ecards." It is also a collection of 200 cards that can be quickly and easily installed into any server for an immediate ecards solution. In addition, another 24 card images are included separately in the Penguin Greetings - Four Seasons collection and another 16 note card images are now included in the Penguin Greetings - Savoring the sights of Seattle Collection. The cards are photo-based and are similar in style and taste to Apples iCards content. To see the complete Penguin Greetings solution, go to the demonstration page.
The Penguin Greetings (pgreet) engine is a web-based greeting cards for LINUX and other UNIX-based systems written in Perl. Penguin Greetings is template-based and shifts ecards to be more like email instead of web-only objects. For flexibility and security, a separate daemon works with the emails and stores data permanently on the server.
Main features:
- Supports any number of ecard sites running on the same server. Each site is independent with its own configuration, database files, and HTML content. Localization/Internationalization is supported so that secondary ecard sites can be used to support multiple languages and regions. User ecard sites are supported.
- Customizable HTML templates for both the ecards and creation screens so that the web content is completely independent of the Perl program. Perl content is embedded using Embperl or now HTML::Mason so that the full power of Perl is available to content developers and for server-side processing. Object-oriented ecard sites can be created using Embperl::Object or Mason. At the same time, creating templates does not require any specific knowledge of Perl. Using Embperl or Mason, it is possible to build complicated ecard sites as demonstrated by the Penguin Greetings - California Poppy Collection. or the Penguin Greetings - Savoring the sights of Seattle Collection
- Support for a persistent Perl interpreter via SpeedyCGI for robust performance under production loads. Configuration and state information is cached in memory for improved performance under SpeedyCGI. Retains support for standard CGI for portability.
- Greeting cards that function more like email. The announcement of the card includes the text of the card so that the recipient can reply to the message. The email of the author is included in the email reply-to field so that recipients can reply to the ecard using the reply feature of most email clients.
- Uses MIME multipart HTML formatted email to directly send complete ecards to recipients.
- Automated installation procedure, including: the installation of CPAN modules not included in Perl 5.8.0, localization of configuration files, and installation of applications, configuration files, and a default ecard website.
- Access to card creation can be limited to users stored in an htpasswd file on server for sites which want to have ecards available only to a particular group of people.
- A separate application daemon to handle such chores as: card scheduling for emailing on a particular date, purging of old cards after a certain date, and backup database files.
- A user agent separate from the user ID which the web server runs as for mailing and storing of data. If desired, ecards can be emailed under existing email accounts on server. Specific human users on the server can be given access to this feature via an access control list.
- Extensive configuration options. Including the location of configuration and data files, performance tuning, and content parameters.
- Based on standard Perl CPAN modules for portability and reliability.
- Extensive logging of daemon activities.
- Six secondary demonstrations sites included with the distribution, Five of which exist in both English and French as examples of internationalization. Four use Embperl::Object to demonstrate object-oriented website building techniques and one uses HTML::Mason.