On Thu, 2021-05-20 at 18:34 +0200, Bert Van de Poel wrote: > We've started getting lots of spam with emoji in the subject too the > past few weeks, so I've looked into this as well. As mentioned by RW, > you would need to create some kind of UTF8 regex header Subject rule. As > I'm not too excited about writing such a regex, it's way at the bottom > of my todo list > Should be easy enough - IsASCII is just a name for [\x00-\x7f] and IsXDigit is [0-9a-fA-F], so the same logic can be applied to define a regex that triggers on any character within the three Unicode emoji ranges. See Wikipedia doe more detail:
https://en.wikipedia.org/wiki/Emoticon#Unicode I haven't yet seen any emojis in Subject lines, regardless of whether the message was spam or not, or I'd probably have already written such a rule and given it a minimal score so it can be used in a more spam- specific meta rule. Martin
