Smtpblock

From Free Software Directory
 
Jump to: navigation, search
[edit]

Smtpblock

http://web.archive.org/web/20050729095526/http://www.angmar.com/smtpblock/
Automatically detects and blocks open mail relays

'Smtpblock' parses a *nix mail log. When new mail messages are detected, it performs DNSBL/SMTP relay tests. If the host is listed in a DNSBL or relays third-party mail, Smtpblock creates a firewall rule to block access to the localhost's SMTP port and/or creates a hash that can be referenced by sendmail's RFC-822 pattern matching feature. It keeps track of each host's test status and time when it will need to be rechecked, reducing the need to constantly check every host sending mail to the local system. Smtpblock can be run as a daemon continuously checking the mail log or as a standalone program parsing the entire log file. Hosts can be manually checked, blocked, or unblocked from the command line.

Documentation

User manpage available in HTML format from http://web.archive.org/web/20050914060146/http://www.angmar.com/smtpblock/smtpblock_2.8_man_page.html


Download

Download version 2.8 (stable)
released on 26 December 2002

Categories

Related Projects




Licensing

LicenseVerified byVerified onNotes
License:BSD 3ClauseJanet Casey22 August 2002



Leaders and contributors

Contact(s)Role
David Bellizzi Maintainer


Resources and communication

AudienceResource typeURI
Bug Tracking,Developer,SupportE-mailmailto:smtpblock@angmar.com


Software prerequisites

KindDescription
Required to usePerl 5.002 or later
Required to useNMAP
Required to usesendmail
Required to useNet_Netmask

This entry (in part or in whole) was last reviewed on 1 March 2017.



Entry





























Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.