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E-MailRelay is a simple SMTP proxy and relay MTA, written in C++, for Linux and Windows. As a proxy all messages can be passed through a user-defined program, such as a spam-filter, which can drop, readdress, or edit messages as they pass through.
jumfi will provide a java based uniform mail filter interface using C, JNI and Java. It will allow mail filters build in java to be applied to multiple mail servers of similar and different design.
Protect your company's email and browsing with your GoodCrypto private server.
* Protects email metadata and resists traffic analysis
* Automatic encryption, decryption, and key management
* All private keys stay on *your* server
* Users don't change their email or browser software
* Blocks web malware
* Runs on your private server
* Completely decentralized
Auto Whitelist automates the detection of safe/valid email addresses by plugging into Postfix and monitoring sent mail and building a whitelist. It then automatically tags all incoming email with information regarding the senders email address status.
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javascript to convert thunderbird/seamonkey filters to sieve rules
Web form that converts pasted rule set from thunderbird/seamonkey msgFilterRules.dat filter file into sieve rules suitable for uploading to an imap mailserver and compatible with the sieve rule editor plugin for roundcube 'sieverules' (http://www.roundcubeforum.net/7-third-party-contributions/46-api-based-plugins/4878-sieverules-plugin.html)
DKIMproxy is an SMTP-proxy that implements the DKIM and DomainKeys standards, to sign and verify email messages using digital signatures and DNS records. It can be used to add DKIM support to nearly any existing SMTP mailserver.
Stop Cyber Threats with VM-Series Next-Gen Firewall on Azure
Native application identity and user-based security for your Azure cloud
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This plugin provides an interface in SquirrelMail where users can create and manage their mail filters for use on systems that implement filtering solutions that run on the server at delivery time (e.g., maildrop, procmail, etc.).
jASEN is a pure java Anti Spam ENgine combining bayesian-like scanning with intelligent email inspection and classification. jASEN is best suited to developers wishing to integrate anti-spam services into an existing server based java email application.
The ploinMailFactory is a mailing framework that provides extended features like a templating mechanism, multitenancy and localizaion. Internally it uses the commons-email API from Apache.
DISCONTINUED - phpSpamManager ( a Spam Manager GUI ) is a graphical interface for managing spam quarantines. It's fully adaptive and will suit any mailserver/spam filter (like spamassassin )as long as messages are stored in individual files (like postf
Camel's Eye is a powerful POP3 email filter. It supports DNS-based Blackhole Lists (DNSBL/RBL), Razor, and rules that search header or body. Features include regular expressions, scoring, deletion on server, automatic whitelisting through an SMTP proxy.
Postfix Log Parser in Python is a log analysis tool written in python language to get statistic reports and detect anomalous behaviours on a mailserver based on Postfix and Cyrus
SMTPSpy Proxy is a "dumb" SMTP proxy that waits for inbound SMTP requests and forwards all them directly to an external SMTP server, while outputting all e-mails passing through to a specified disk location, for monitoring purposes.
SmartSieve is a web based graphical user interface for creating and managing sieve scripts for mail filtering and vacation messaging on a cyrus imap mailserver. Written in PHP, SmartSieve is easy to configure and use.
With Tiger Envelopes you can stop snoops from reading your email. Same email client. No extra steps. One click to install on Windows and Linux. Configures Outlook, Thunderbird, and KMail. Supports GPG, PGP, Bouncy Castle encryption.
A simple Milter which checks the senders and recipients email address are valid (i.e. a MX server will accept mail for it).
Written in PERL using the Sendmail::Milter interface, this caching milter signifcantly reduces the ammount of UCE/UBE.
RelMail is a set of scripts written in Perl that uses sendmail-milter api to copy and archieve in a SQL database all e-mail (headers, content, attachments) sent or received through the sendmail smtp server.
SPAMSNAIL is a anti-spam filter dedicated to end-users with a slow / non permanent connection to their mailserver. It is written in Perl and uses the Bayes system.
A user-centric Java Mailet for the Apache James mailserver (a Javamailserver) for the purpose of filtering spam using a naive Bayesian algorithm. As a Mailet, the filter can act upon spam as it is received over SMTP before the user gets it.