Ebay/Paypal blocking HTTP access based on SORBS DUHL / Spamhaus PBL

hey, For a while now, we have been getting complains from our broadband customers about not being able to reach ebay.com/paypal.com We have nailed it down to some small prefixes and they are all listed in SORBS DUHL / Spamhaus PBL and have been listed for ages. These are indeed dynamic IP pools and should not send any email (not that SMTP has anything to do with HTTP). For some reason, it looks like ebay/paypal is now blocking HTTP access based on these blacklists. Does anyone have working contact in their NOC or with security people? All emails to public contacts have not been answered to. -- tarko