On Tue, Feb 20, 2018 at 09:02:57AM +0000, Richard Torrens (lists) wrote: > > This system appears to defeat spammers - most of the email addresses that > have been spammed seem to have been harvested from computers by malware.
We're getting dangerously off-topic here, but they mostly harvest them from: - usenet and mailing lists such as this (they are so bountiful, the harvesters simply special-case the mitigations that mailing list archival websites use to obscure addresses) - brute-forcing people's email passwords, not only to send spam through but to harvest addresses from your INBOX and address book. - Guesswork. Attempting to send an email is cheap, so when you get a list of current domains, you simply try all the common stuff, like "lists" or "tim". Doing it on your website with mailto: links isn't worth it these days, spidering the web like that is comparitively expensive compared to the above techniques. B.