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