PS: If moderator/community member think it is a offending thread you/I can close it.
The Scunthrope problem, also known as the Clbuttic mistake, occurs when spam filters block e-mails because their text contains a string of letters that are shared by an obscene word.
I recently faced it, Does this needs to be fixed here Oracle forums?
Below are the links which says AOL, GOOGLE fixed this
https://en.wikipedia.org/wiki/Scunthorpe_problem