[Users] What is X-UI-Filterresults?

[Jeremy Nicoll]

On Wed, 2 Aug 2017, at 19:07, David Niklas wrote:
> Hello,
> To all of my mail from one provider (I have more than one email address),
> there is a header called X-UI-Filterresults .
> I am curious to know what it is for?

Any header whose name starts "X-" is non-standard.  It's common to find
X-
headers in emails, added either by the recipient's mail provider (which
I'd
expect is what has happened here), or in some cases by systems the mail 
has passed through on its way from the sender.

One can only guess that this header means something to your mail
provider,
who presumably run some sort of filtering of mail on your behalf. 
You'll 
need to ask them why they sent it to you in such an unreadable (and thus
useless to you) form.

The text in the header looks to me as if it is base64-encoded; I tried
pasteing 
it into a decoder, but it didn't turn into a plain text description of
anything.


 
> And more importantly, is there some kind of processing rule I can use to
> delete it?

Sorry,  don't know.  I wouldn't expect the fact that it spans multiple
lines 
to matter though.  Any code that can parse header contents (perhaps to 
remove one) has to be able to cope with multiline headers.

-- 
Jeremy Nicoll - my opinions are my own.