Tim Hardy

I’ve noticed a plague of “Undelivered Mail return to sender” messages recently in my inbox - all of them spam. Friends with their own domain names have reported the same.

Clearly conventional spam filters are working too well and the vermin who make a living out of unsolicited junk mail are changing their tactics.

Now instead of spamming the victim direct, they forge the headers of their messages so that it appears to come from the person they wish to spam, send it to a non-existent account elsewhere and let the second account bounce it back to their real target.

This level of indirection helps it get through the victim’s spam filters.

If you have received email pitches about dubious stocks that are “about to take off” from this domain please rest assured that they do not originate with me.

Edit: For advice on tackling this problem, please read the following post on using greylisting.