Repeated Blacklisting / IP reputation

Tue Sep 8 15:16:33 UTC 2009

Tom Pipes wrote:
> Greetings, 
>
>
> We obtained a direct assigned IP block 69.197.64.0/18 from ARIN in 2008. This block has been cursed (for lack of a better word) since we obtained it.  It seems like every customer we have added has had repeated issues with being blacklisted by DUL and the cable carriers. (AOL, AT&T, Charter, etc).  I understand there is a process to getting removed, but it seems as if these IPs had been used and abused by the previous owner.  We have done our best to ensure these blocks conform to RFC standards, including the proper use of reverse DNS pointers.
>
> I can resolve the issue very easily by moving these customers over to our other direct assigned 66.254.192.0/19 block.  In the last year I have done this numerous times and have had no further issues with them.
>
> My question:  Is there some way to clear the reputation of these blocks up, or start over to prevent the amount of time we are spending with each customer troubleshooting unnecessary RBL and reputation blacklisting? 
>
> I have used every opportunity to use the automated removal links from the SMTP rejections, and worked with the RBL operators directly.  Most of what I get are cynical responses and promises that it will be fixed.  
>
> If there is any question, we perform inbound and outbound scanning of all e-mail, even though we know that this appears to be something more relating to the block itself.
>
> Does anyone have any suggestions as to how we can clear this issue up?  Comments on or off list welcome.
>
> Thanks,
>
> --- 
> Tom Pipes 
> T6 Broadband/ 
> Essex Telcom Inc 
> tom.pipes at t6mail.com 
>
>
>
>   
Unfortunately, there is no real good way to get yourself completely 
delisted.  We are experiencing that with a /18 we got from ARIN recently 
and it is basically the RBL's not updating or perhaps they are not 
checking the ownership of the ip's as compared to before.  On some 
RBL's, we have IP addresses that have been listed since before the 
company I work for even existed.  Amazing right?