Florian Weimer wrote:
* Wilfried Woeber:
You also need to rewrite Received: lines, to remove records of the supposedly infected address space. And you should do this on a separate server on a dedicated prefix, so that misguided blacklist operators do not retaliate against your main mail service for doing that. 8-(
I really don't get that one :-)
Which part?
Sorry Florian, I got somewhat mixed up between "received:" and "changed:" :-/ My apologies... -W
For certain mail relays, filter rules are applied to hosts behind it, not to the relay itself.
I suppose the NCC manufactures a completely fresh and shiny address space object when giving out "previously used" address space?
They do. But blacklist operators do not seem to care. (Same for some routing database operators, BTW.)
Apparently, it's also possible to wipe clean the record on your inetnum: objects, so it's understandable that the blacklist operators do not automatically wipe all the records from their databases just because the object appears to be new.