+> ... would trigger false positives on

+> a@domain, b@domain, ..., k@domain

+> i.e., 11 (not 10) of the same domain would trigger this regardless of the
+> local parts.  Well, the SUSPICIOUS_[CC_]RECIPS macros seemed good, so I
+> tweaked them ...

Tom> Coincidentally, I just sent fixes for these patterns last night.

Hm, is there some latency with the archives?  I did search on the string
VERY_SUSP_RECIPS before posting.  Oh, well.

Tom> But yours requires the final substring of the username to be the
Tom> same each time...

Yes...

Tom> ... while (I believe) the rule was intended to catch the frequent
Tom> practice of sending to a large list of alphabetized names, e.g.
Tom> francesca@foo, frank@bar, franklin#baz, fred@baz ... . So the original
Tom> pattern (intended to) match reqeated addresses with the same initial 2
Tom> characters.

Ah, that makes sense; that *is* a better pattern to test for.

Tom> But as you saw, it wasn't quite right.  It matched parts of
Tom> the domain when it thought it was matching username.
Tom> Try these (probably still more complex than necessary)...

Yes, this is better.  (I did figure that an extra , and \b like you added
would do the trick, but my various tries were not quite right, so I ended
going with a simpler but less functional solution as you saw.)  Nice work.

-- John

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