Top: Mail

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• Attachments at Shell - How to e-mail attachments from the command line
• Challenge-Response - Critique of Challenge-Response software by Karsten Self
• Challenge-Response Filtering - Collection of procmail recipes to intercept and discard annoying C-R e-mails from all known C-R mailbots
• Crossposting - Mailing list post listing a number of reasons (and there are others, not cited) why crossposting between mailing lists is usually a bad idea, despite the initial attraction of so doing
• Disclaimers - Why automatically-appended e-mail disclaimers are useless, in addition to making your firm look stupid in public
• DMARC Mitigation - How and why to configure GNU Mailman mailing lists to mitigate DMARC damage to operations and deliverability
• DNS Blocklists: multirbl.valli.org - The best single site where you can check an IPv4/IPv6 address's SMTP spam reputation across many industry DNS blocklists. Tip: Pick DNSBl Lookups under Tests, fill in IP, press Send. If you see a sea of red, run the tests again, as that indicates CGI failure to reach the remote DNSBLs.
• DNS Blocklists: www.DNSBL.info - Another single site where you can check the IP reputation of an SMTP mail server across more than 100 major DNS blocklists. Highly useful for spotting spam-reputation causes of deliverability problems.
• DNS Blocklists: mxtoolbox.com/blacklists.aspx - Another single site where you can check an IPv4/IPv6 address's SMTP spam reputation across many industry DNS blocklists.
• DNS Blocklists: WhatIsMyIPAddress.com/blacklist-check - Another single site where you can check an IPv4/IPv6 address's SMTP spam reputation across many industry DNS blocklists.
• DNSViz.net - site to document and troubleshoot any domain DNSSEC authentication chain, providing a visual analysis of the chain and its resolution in DNS space, showing any detected configuration errors, and also giving a lot of technical details about DNS quality and configuration problems. Unlike many such sites, this site's entire suite of supporting software is open source at https://github.com/dnsviz/dnsviz, and is Python code under GPLv2 or later.
• Eximconfig - J.P. Boggis's set of prepackaged configuration, filter files, modifications, and instructions for the Exim4 MTA to make it reject and eliminate spam very effectively
• GPG Rant - Karsten Self standard essay to people / mailing lists that have blocked his GPG-signed mail
• Exim Book - Practical Exim by Dan Shearer, in HTML, RTF, and Star Office formats, compressed
• Exim Book - Practical Exim by Dan Shearer, in HTML format
• Exim Notes - Tips for the Exim MTA from Waikato Linux Users Group
• Fetchmail Procmail Sendmail - Configuring fetchmail, procmail, and sendmail to cooperate
• GnuPG with Mutt - Everything You Need to Know to Start using GnuPG, but Justin R. Miller
• Google Groups - How to Join a Google Group via the Web using a real, non-Google e-mail account and not get pushed into using GMail for it
• Google Groups - How to Join a Google Group via e-mail using a real, non-Google e-mail account and not get pushed into using GMail for it
• Groupware - All known groupware (mail/scheduling) suites for Linux
• GroupWise Quoting - Add-in for Novell GroupWise to enable toggleable access to Internet-style quoting, so you don't look clueless in technical forums
• HTML Mail Disabling - How to turn off HTML mail in all common mail clients, by G.E. Boyd
• HTML Mail Disabling - More about turning off HTML mail in common mail clients
• Joe-job headers - Headers from the original revenge-spam incident attacking Joe Doll's site in Saratoga, CA, and followup e-mails
• Joe-job history - Article 'The Weekend IBM.NET Almost Died' (formerly at www.markwelch.com/yuri.htm) by attorney Mark J. Welch about the original, eponymous 'joe-job' incident at New Year's, early 2007. Includes detailed history and analysis of the attack, plus background information on the nature of the grudge against reputable hosting provider Joe Doll / Joe's Cyberpost
• Joe-job spams - First recorded use of spam as a revenge-attack tool against reputable sysamins. On Jan. 2, 1997, spammer sent forged-header spam to provoke the anti-spam community into attacking a reputable hosting service (Joe Doll's joes.com in Saratoga, California) that had ejected him, injecting spam over a weekend into ibm.net dial-up lines in Chicago, in apparent knowledge that IBM would be slow to react until company lawyers could be consulted. Joe-jobs are so named for Joe Doll, the victim. (Linked Usenet post, and indeed the entire discussion thread, appears to have been retroactively removed from the Google Groups Usenet archive. See entries below.)
• Joe-job motivation - Analysis of the famous 1997 'joe-job' attack against Joe Doll, including apparent motivation of the spammer in question (Linked Usenet post, and indeed the entire discussion thread, appears to have been retroactively removed from the Google Groups Usenet archive. See entries below.)
• Joe-job excuses - Follow-up from an interested party about the joes.com 'revenge spam'
• Joe-job threats - Threatening Usenet posts related to the January 2, 1997 joes.com 'revenge spam' incident
• Joe-job threats - More threatening Usenet posts related to the January 2, 1997 joes.com 'revenge spam' incident
• LDAs - List of all known Local Delivery Agents (LDAs) for Linux
• Mail flows - Explanation of how standards-based e-mail is handled by different types of software, with block diagrams, to clarify what each mail-handling type is, and how it works
• Mailman Mass-Delete - Perl script to automate deletion of all mail (e.g., spam) currently held for admin review on a Mailman mailing list
• Mbox to Maildir - Mb2md.pl is an efficient and robust tool for converting mbox files to Maildir directories
• MDAs - List of all known MDAs (mail delivery agents) for Linux
• MLMs - Guide to mailing list manager commands (incomplete)
• MLM Bestiary - Self-hostable, credible-successor migration targets for admins currently running Mailman 2.1.x but dubious about Mailman3.
• Mozilla Mail Spellcheck - Adding spelling checking to Mozilla Mail/News
• MS-Outlook to Linux - Tools to migrate data from MS-Outlook to Linux mail and calendar applications
• MTAs - Comparison of all common MTAs
• MTA crypto - Adding SSL/TLS support to common MTAs
• MUAs - Bestiary of all known MUAs for Linux
• Mutt Forwarding Attachments - Forwarding attachments in the Mutt MUA
• Mutt Tips - Tips for effective use of the Mutt MUA
• Nullmailers - Minimal MTA packages that (only) forward outbound SMTP to an upstream smart relay MTA
• Off-list Replies - How to (and how not to) send private mail replies to postings in public on-line forums
• Phoenix Mailto - Adding mailto: link processing to Mozilla Phoenix betas (e.g. v. 0.5)
• Plus-Addressing FAQ - Email Addressing FAQ with information on how to use and manage 'plus'-addressing
• POP3 Virtual Users - Supporting POP3 (and IMAP) virtual users
• POP3-SSL Virtual Users - Supporting POP3-SSL virtual users
• Postfix Antispam - Example antispam Postfix setup
• Postfix Anti-UCE - Another guide to Postfix antispam config, by Jim Seymour
• Postfix Tutorial - Getting Postfix going and cooperating with Cyrus IMAPd
• Postfix Virtual Domains - Explanation of Postfix virtual domain support
• Procmail - Joe Gross's short introduction to procmail
• Procmail Exim - Configuring Exim's transport and director features to use Procmail as an MDA
• Procmail Losers - Example procmail filter to autodiscard mail from users of common MS-Windows MUAs
• Procmail Maildir - Making procmail support Maildir format
• Procmail Mailing Lists - Single procmail recipe to auto-file almost all mailing lists' traffic
• Procmail Tips - Local collection of miscellaneou procmail tips and tricks
• Procmail Trollkiller - Filter by Tobia Conforto to autodelete posts from a roster of trolls and all first-level replies unless the mail is addressed to you directly
• RulesDuJour - The RulesDuJour bash script updates SpamAssassin rulesets dynamically as authors release new versions
• Quoting - Quoting Style on Usenet: a cogent explanation of how and and why to quote properly on-line (including on mailing lists)
• Quoting in Outlook - Utility to fix MS-Outlook's broken quoting style
• Quoting in Outlook - Set of VBScript macros to do proper quoting and add other nice enhancements
• Quoting in OE - Utility to fix MS-Outlook Express's broken quoting style
• Quoting in WLM - Utility to fix MS Windows Live Mail's broken quoting style
• Sendmail Delay - Curing sendmail-related startup delays on standalone boxes
• Sendmail Relaying - How to alter sendmail default config (e.g., in RH8 and later) that restricts relaying to localhost only
• Sendmail Disclaimer - Making sendmail append boilerplate text to all outgoing mail
• Signatures - All about e-mail and netnews .signature blocks and netiquette thereof. (Understand the McQuary Limit.)
• SMTP AUTH - Setting up SMTP AUTH in Postfix and Exim
• SpamAssassin config - Run-through of how to configure SpamAssassin.
• Spam Filtering - Comprehensive HOWTO for SMTP-time spam-rejection using Exim config as an example
• Webmail - All known webmail software