SMTP Proxy Server as spam/virus filter News

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SMTP Proxy Server as spam/virus filter / News: Recent posts

Welcome to new developer adel_acameron

We welcome new developer adel_acameron to our project.

Posted by 2004-06-18

Fluffy the SMTPGuardDog version 1.4 released

Fluffy the SMTPGuardDog works as a proxy SMTP Server to reduce viruses and spam coming in to an existing SMTP server. The major improvements in version 1.5 are the ability to weight different DNSBL lists and control message handling based on a total weighted score, significant speed improvements in the processing of messages.

You can download the latest version from
http://sourceforge.net/project/showfiles.php?group_id=75935
and read the documentation and other project information on our project page at
http://www.fluffy.codeworks.gen.nz ... read more

Posted by 2004-01-20

Fluffy the SMTPGuardDog version 1.1 released

Fluffy the SMTPGuardDog works as a proxy SMTP Server to reduce viruses and spam coming in to an existing SMTP server. The major improvements in version 1.1 are the ability to specify whether each DNSBL is to be used to block or to warn only and a monitoring option so you can get a report if an IP or domain name is listed on a DNSBL

Posted by 2003-09-04

URGENT: REMOVE *.OSIRUSOFT.COM from DNSBL lists

You should remove or disable all references to OSIRUSOFT.COM in your DNSBL lists.

relays.osirusoft.com is a default entry in Fluffy.

Osirusoft.com has shut up shop, and is currently sending a negative ('junk mail warning') message for ALL email senders. So if you are using this DNSBL, anything not in your whitelist and not cached, will be rejected as junk mail.

I will work on a method of detecting an aberrant DNSBL in the next version of Fluffy.

Posted by 2003-08-27

DNSRBL change recommended

Fluffy comes with a default DNSRBL list. This listing includes dnsbl.sorbs.net. If you are using this DNSRBL I recommend editing the entry for dnsbl.sorbs.net to ignore the response code 127.0.0.10 ; this code is supposed to identify dial-up connections but I have found it unreliable in this area and liable to block legitimate email.

Posted by 2003-07-24

Blocking Hotmail exploit used for spamming

I have improved the wildcard matching of domain names in white/black lists. This is primarily because of a security flaw in Microsoft's Hotmail which is allowing spammers to send their spam through Hotmail using a DAV interface. I don't want to block all of Hotmail but I can block the DAV spam by blacklisting the domain *dav*.hotmail.com

You can read more about it here:
http://www.unicom.com/chrome/a/000262.html

Posted by 2003-07-24

Fluffy the SMTPGuardDog version 1.0 released

Fluffy the SMTPGuardDog works as a proxy SMTP Server to reduce viruses and spam coming in to an existing SMTP server. The major improvements in version 1.0 are adding the ability to block messages based on wildcard text string matches against message headers, and sending a 'pass-through' email address when m,essages are blocked

Posted by 2003-07-15

Fluffy the SMTPGuardDog version 0.9 released

Fluffy the SMTPGuardDog works as a proxy SMTP Server to reduce viruses and spam coming in to an existing SMTP server. The major improvements in version 0.9 are adding the ability to black- and white-list of IP address ranges using a subnet mask, and to redirect email addressed to one address (including wildcard matches) to another address.

Posted by 2003-07-06

Fluffy the SMTPGuardDog version 0.8 released

Fluffy the SMTPGuardDog works as a proxy SMTP Server to reduce viruses and spam coming in to an existing SMTP server. The major improvements in version 0.8 are an improved wildcard matching of white/blacklisted domain names. So now you can match domain names of the pattern *dav*.hotmail.com which allows you to block spammers exploting the DAV vulnerability in Hotmail without needing to block all of Hotmail.com... read more

Posted by 2003-06-11

Fluffy the SMTPGuardDog version 0.7 release

Fluffy the SMTPGuardDog works as a proxy SMTP Server to reduce viruses and spam coming in to an existing SMTP server. The major improvements in version 0.7 are the ability to block a user-specified list of attachment types, supporting Sophos Antivirus for Windows NT/2000/XPadding antivirus, and reporting of the numbers of messages accepted, reject and deferred.

Posted by 2003-06-08

Fluffy the SMTPGuardDog version 0.6 released

Fluffy the SMTPGuardDog works as a proxy SMTP Server to reduce viruses and spam coming in to an existing SMTP server. The major improvements in version 0.6 are adding antivirus support and context sensitive online help.

Posted by 2003-05-21

Fluffy the SMTPGuardDog version 0.5 released

Fluffy the SMTPGuardDog works as a proxy SMTP Server to reduce spam coming in to an existing SMTP server. The major improvements in version 0.5 are adding online help and fixing a bug that prevented Fluffy from running on a clean install.

Posted by 2003-05-14

Fluffy the SMTPGuardDog version 0.4 released

Fluffy the SMTPGuardDog works as a proxy SMTP Server to reduce spam coming in to an existing SMTP server. The major improvements in version 0.4 are adding an option to allow non-local network users to be considered local, based on their source email address, and automatic checking for program updates.

Version 0.4 also saw the program name changed from SMTPFilter to Fluffy the SMTPGuardDog.

We also completed a workaround for a Microsoft bug where data would arrive on a TCP connection before the connection was established, generating a 40006 Winsock error.... read more

Posted by 2003-05-09

SMTPFilter version 0.3 released

SMTPFilter works as a proxy SMTP Server to reduce spam coming in to an existing SMTP server. The major improvements in version 0.3 are adding wildcard matching to 'spam trap' addresses, option to mark mail as junk mail in the subject line rather than blocking it, and completion of the GUI configuration forms.

Posted by 2003-05-02

Welcome to new developer Zevallos

We welcome new developer Zevallos to our project. He brings six years experience in VB component development and says he's excited about this project.

We need to figure out how to work as a team. Zevallos is already quickly picking up on sharing source code.

Posted by 2003-04-20

SMTPFilter version 0.2 release

SMTPFilter works as a proxy SMTP Server to reduce spam coming in to an existing SMTP server. The major improvement in version 0.2 is a GUI configuration form for most settings.

Posted by 2003-04-19

SMTPFilter version 0.1 released

SMTPFilter works as a proxy SMP Server to reduce spam coming in to an existing SMTP server. SMTPFilter adds a series of anti-spam capabilities as a front-end to an existing SMTP server including DNSRBL checks, whitelist and blacklist IP addresses and (wildcarded) domain names, spam trap email addresses, and delayed acceptance from new sources of email.

Posted by 2003-03-24