>> I just moved my mail server to my internal
office network.
>> The IP block I've been assigned apparently used to be used
>> for dynamic DSL users. The problem is, at some point
>> someone used one or more of these IP addresses to send out
>> spam, enough so that my entire Class C block is blacklisted
>> in some database.
>>
Caveat Emptor....
>>
>> How the *hell* do I track down what fuckwit is blacklisting
>> my address?
>>
>> I appreciate the efforts people go through to thwart spam
>> but this blanket blocking bullshit really pisses me off.
>>
Alas, it it not uncommon. And many of the blacklists are shared, so even if
you get off one, you get re-blacklisted when another one reports. I had a
similar situation about 2 years ago, the only solution I found was to
threaten to sue the provider of the IP Block (in fact there was little or no
legal basis for a suit), but I did get a different block assigned [although
the first two alternated he offered both had some blacklisted IP's]
Good luck.