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Re: What *are* they smoking?
- From: Matthew S. Hallacy
- Date: Mon Sep 15 19:51:01 2003
On Tue, Sep 16, 2003 at 01:18:26AM +0200, Jeroen Massar wrote:
>
> Even worse of this is that you can't verify domain names under .net
> any more for 'existence' as every .net domain suddenly has a A record
> and then can be used for spamming...
>
> From: Spammer <i@spam.using.verisign.eventhoughthisdomaindoesntexist.net>
> To: You <spamtarget@example.com>
>
> Thank you Verisign! Now we need to check for existence of an MX
> and then just break a couple of RFC's in the process :(
Checking for NS or SOA record(s) is sufficient, neither are being returned,
only A records.
Of course, you could just block anything that resolves to netsol.
--
Matthew S. Hallacy FUBAR, LART, BOFH Certified
http://www.poptix.net GPG public key 0x01938203
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