Malicious spoofing of spam sources?

Maybe I'm out in right field somewhere, but I get waves of bounced emails that say they are coming from me (any of several domains as well has my home server domain) yet pretty darn sure they did not come from my server.

So one of two things:

(1) They ARE coming from my server and neither I nor my server host techs can detect it, or

(2) Someone is maliciously doing this, either targeting my server specifically or it is just the way the spammers and virus programs work.

If (1) is true, how can I detect and stop this?

Otherwise, I know of a couple of people who would do this maliciously if they could, so if this is the case, is there anyway (or any for hire supertech) to catch them?

I have gotten my IPs and domans blocked by a couple of ISPs, which is affecting the customers hosting with me. Contacting these people (the ISPs) about the problem is pretty much a futile exercise.

Sure would appreciate some feedback about this problem.

Thanks.

 

 

 

 

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