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Originally Posted by Toreador
If this is true, how come I continue to receive emails from SORBS blacklisted addresses? In the last 8 hours I have received 3 on the SORBS list, plus another 4 on SpamCop. I have these flagged by MailWasher.
If NTL are using SORBS, is it only on some accounts? Or is it some cut-down version? Or what?
Interestingly, one of the addresses that is on the SORBS list is an ntlworld address  |
I believe that as long as you point your SMTP server to smtp.ntlworld.com (assuming of course you are using the ntl network) having your IP address listed in SORBS will not be an issue, as most blocking is based on dynamic IP's running their own smtp servers, which is something that should not really happen. So ntl will not bloock the email if it is listed in the SORBS dynamic IP listing, as long as the server sending the email is the official server for the MX listing of that network.
I'm not a great fan of SORBS for that reason, but I hate spam too, so if a network wil not tackle the spam issue, by allowing rouge SMTP servers to run amock, then they can expect to have problems.
It's intersting that there is an upside to this kind of reporting. Many viruses use their own SMTP engine to propagate themselves, so if a network is using SORBS to filter mail, they can potentially reduce the number of email distributed viruses that do not go through the official MX servers of the infected network. ntl by and large then offer an indirect measure to counter virus infected emails.
To be honest, it could be worse. ntl could use the SPEWS block lists, and they are known for their militant attitude for IP listing. It will often take threats of legal action before thy will remove an IP address. I understand that a number of networks have removed their SPEWS checking scripts because of the massive amount of complaints they have received.
But its not all bad, take a look
here , and be thankfull you are not a Verizon customer.