Regular expression email whitelisting
wl is an email "filtering" program: it reads an email on standard input and writes it back out on standard output. If certain criteria are met based upon the headers of the email, an X-Whitelist or X-Blacklist header will be added to the email. Hopefully, you can configure your mail reader (or maildrop/procmail) to do something useful based upon the existence of these headers.
If an error is encountered while processing your rule sets, a X-Wl-Error header will be added to your email with more details.
released on 8 June 2004
This entry (in part or in whole) was last reviewed on 27 February 2017.
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