Author: Kevin P. Fleming Date: To: exim-users Subject: Re: [Exim] spam calls home
Ken Lowther wrote:
> Many spams now call home by requesting a 'zero byte' gif when you open the page.
> This is also used for other people wanting to see if you opened the mail. Are
> there any rules for checking this?
That would be very hard using facilities in Exim itself. This is best
implemented in the MUA, and many good ones do just that (suppress links
to images not included with the message itself).