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Email weirdness: Who or what is "caf_"?


Email weirdness: Who or what is "caf_"?

I have set up my gmail account to forward emails to my plusnet email address. Since the email jiggery pokery of yesterday, without any changes on my part - both to my Plusnet or gmail accounts - I have started to receive really wierd blank emails from Plusnet which seem to match the times that they would have been forwarded from gmail.

For the purposes of explaining, my plusnet account is creamola - i.e. and let's pretend that my name is "boris" - i.e.

The emails that I have been receiving - even today - are blank, have no address on the To: line and no subject: etc but in Outlook they appear to come from:


Looking at the headers, I find this:

05:21:00 +0000
X-PN-DSpam-Filtered: by PlusNet MXCore (v3.00)
X-DSPAM-Result: Innocent
X-DSPAM-Confidence: 0.5090
X-DSPAM-Probability: 0.1428
Message-Id: <>
Date: Tue, 19 Dec 2006 05:21:01 +0000
X-PN-SpamFiltered: by PlusNet MXCore (v3.00)

So you will notice that somehow, mxcore04 or maybe the spam filter, is generating a sending address of "creamola+caf_".

I have set up no such Plusnet email account as "caf_".

Anyone know what is going on?