I want to block outgoing mail to commonly misspelled domains that are owned by typosquatters/redirect/spam/datamining people.It's one thing to end up at http://www.earchlink.net by mistake, but to send mail to [EMAIL PROTECTED] is quite another. :-(
If you're willing to build them yourself, here's a construct that should work:
header NOTEARTHLINK To =~ /(?!EARTHLINK)([^E]ARTHLINK|E[^A]RTHLINK|EA [^R]THLINK|EAR[^T]HLINK|EART[^H]LINK|EARTH[^L]INK|EARTHL[^I]NK|EARTHLI [^N]K|EARTHLIN[^K]).net/
Dan