Hi Demi, On Sat, Jul 30, 2022 at 5:16 AM Demi Marie Obenour <demioben...@gmail.com> wrote: > > On 7/26/22 21:24, Jason A. Donenfeld wrote: > > This appears rather easy to reproduce. Just include the char 0x0c in a > > message, and the signature will be invalid. Playing with the resultant > > message, I can make it valid by removing the \x0c character, > > suggesting that it's being stripped from whatever rspamd receives for > > signing. > > I suspect the problem is that \x0c is a space character (according to > isspace(3), but is *not* \x20, \n, or \r.
Right, that was my guess too, though I didn't see anything too wrong in opensmtpd itself, nor in the Golang scanner interface used by filter-rspamd. So that means the issue might be in rspamd? But I haven't tried to isolate that yet. > What OS are you using? Linux. Jason
