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Thread: IPs and Spam

  1. #1

    IPs and Spam

    Hello,

    We've had the issue of whether to grant IP blocks greater than /29 or not. Many server orders we receive request a /28 at least.

    We ask for justification on anything greater than a /29, but of course how do you know if this justification is truthful? A spammer's obviously not going to tell the truth.

    We run a fraud check on every order, and manually ask for justification. We've gone as far as calling the client, but there is no assurance in any of this that they will not misuse their allocation.

    What policies do you have in place to deter this?

  2. #2
    Join Date
    Aug 2007
    Location
    Belgium
    Posts
    4,183
    Just block any ports / protocols (if you have the option) which can be used for spamming. If they claim it's not for spam/mailing and they need those ports open, then you got your answer.

    Also do some digging, mostly when you enter their e-mail or company name, you already find out more info.
    Most of the spammers work with anonymous whois. What they have to hide?

    They also often mail from gmail addresses. We don't hand out high amount IPs anymore unless they can proof they are a reputable company.
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  3. #3
    Here's a procedure we've had success with: Block SMTP on the customer's vlan. If they require it be open, request a decent sized setup fee for the IP addresses. If the IP addresses remain clean for X weeks/months then refund the setup fee/credit the account for the amount of the setup fee.
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  4. #4
    Quote Originally Posted by NYCServers-Nick View Post
    Here's a procedure we've had success with: Block SMTP on the customer's vlan. If they require it be open, request a decent sized setup fee for the IP addresses. If the IP addresses remain clean for X weeks/months then refund the setup fee/credit the account for the amount of the setup fee.
    Thanks. We are going to try this. How much is the fee you assess? Would $25 be sufficient?

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