I have actually posted this question in the general wordpress support area as to start with didn't think the problem was related to Contact Form 7 but now wonder if it is...
Contact Form 7 seems to be working properly in that the client receives enquiries via the contact form correctly. The problem they are having is that they are also getting 5 to 10 emails a day that have no subject except [SPAM] marked in the subject field, and say they are from WordPress. The details from the email header are as follows:
The from reads:
From: WordPress <>
The emails seem to be coming from the clients server ie the Return-path says:
There is no content.
I have the Mail from set up as:
I can't for the life of me figure out why this is happening. I don't know how to tell if it is in fact spam or if there is something not right with the settings. I have contact form 7 set up on a couple of other sites and they are working fine - their settings are exactly the same as the client who is having the problem.
Does anyone have any ideas as to why this might be happening?