On Mon, 03 Jun 2019 11:43:44 -0400 Bill Cole wrote: > On 3 Jun 2019, at 2:20, Stephan Fourie wrote: > > > Hi, > > > > We're currently seeing the rule MISSING_SUBJECT sporadically > > hitting on emails that have a subject. This issue seems to have > > started during last week, which is when clients started complaining > > about false positive detections. Please see example headers at the > > following link: > > > > https://pastebin.com/raw/GtnV67Hj > > The headers are all missing the traditional space between the colon > and the header content.
And this include google headers, so presumably the spaces have been stripped locally.