Alessandro Vesely via Dng <dng@???> wrote:

>> I have no choice over the neighbours !

> Don't buy overly cheap connections...

Doesn't matter how much you pay - unless you get an entire net-block to yourself then you have no control over the neighbours. Only the ISP has control over the neighbours.

> Another possibility to discard spammers claiming to be your domain is to set SPF -all. That, however, has other drawbacks.

I think you missed the context.
For *MY* mail server, I can ignore any SPF records etc - if the connecting client claims to be me then I know it's lying.

Simon