someone is using my email address in "reply to" field

[Sysman]

It used to happen a lot with my account - spam machines would use a random string of letters and my domain name at the end to mail out loads of stuff. Occasionally I'd get very irate comments left on my website about how evil I was for spamming people, and I'd have to explain that if you look at what has happened, it's nothing to do with me.

There was a sudden outbreak of this about 10 years ago. I was the not so lucky recipient of multiple copies of an irate message from an Italian website, obviously generated by a spam rule they had.

That's how I learned that bouncing messages isn't a good idea. You just annoy innocent victims .