https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7541
--- Comment #9 from Alex <mysqlstud...@gmail.com> --- That was it, thanks very much. It's the result of the Fromnamespoof.pm plugin, developed by Paul Stead, that I recently started using. I should have thought to narrow down the custom changes I've made to diagnose this. I'll contact him offline. -- You are receiving this mail because: You are the assignee for the bug.