https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7388
--- Comment #5 from Frank Urban <frank.ur...@commerzbank.com> --- My rule works in general but it seemed it does not work if we have such a header Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: base64 So my idea was that SpamAssassin is not able to scan the body and I found this Bug here. But the body in my example is base64 encoded. So it look like that I have another problem And this will not work body COBA_BASESTRIKER /base\ href=\.http/i because I want to get a hit for base href="http .. but this is another thing not relevant in this Bug here -- You are receiving this mail because: You are the assignee for the bug.