Thanks Jay To add to this
Sleepy here but a quick script ((linux for you windows guys) [r...@sumless3 jgb]# cat send_text.sh #!/bin/sh echo "go" # Server's IP address # IP_ADDRESS='some_smtp_relay.com' mf="mail from:" rp="rcpt to:" echo $mf (sleep 2 ;\ echo "HELO guess.net";\ sleep 2;\ echo $mf " <admino...@blah.net>" ;\ echo $rp " <44421...@tmomail.net>" ;\ \*Bogus return addy *\ sleep 4;\ echo "data";\ sleep 3;\ echo "Subject: Merry Christmas!.. ";\ echo "From: Spammerr";\ echo "To: YOU";\ echo " SPAM SPAM blah blah... - sleep 2;\ echo ".";\ sleep 1;\ echo "quit";\ sleep 2) | telnet $IP_ADDRESS 25 #| telnet $IP_ADDRESS 25 exit Seems to put them thru, and unless you the providers Tier3-4 suport theres nothing you can do... Only a matter of time till something does a count(n) in C or else... Cheers, Thanks Andreww! -Joe On Fri, Dec 17, 2010 at 1:14 AM, Jay Ashworth <j...@baylink.com> wrote: > ----- Original Message ----- > > From: "Andrew Haninger" <ahan...@mindspring.com> > > To: "Joe Blanchard" <jbfixu...@gmail.com> > > Cc: nanog@nanog.org > > Sent: Friday, December 17, 2010 1:28:47 AM > > Subject: Re: OT - NO (Non-Operational) Question > > On Fri, Dec 17, 2010 at 12:22 AM, Joe Blanchard <jbfixu...@gmail.com> > > wrote: > > > > > It appears there's really no easy way to determine the origin of a > > > text sent to a cell... > > > > > For shortcodes, Neustar provided a list: > > > > > https://www.usshortcodes.com/csc/directory/directoryList.do?method=showDirectory&group=all > > > > For regular cellular numbers, the Wireless Amber Alert site is popular > > amongst MVNO (e.g. prepaid) users to find out so they can use the > > email-to-text gateways: > > > > http://www.wirelessamberalerts.com/ > > > > (You don't actually sign up, just enter the number and then it will > > tell you > > the carrier.) > > > > For landlines/VoIP/etc. Google should be able to tell you at least the > > city/state. Though it's rare that you will get a text from a landline, > > it is possible. > > I could be wrong, but I think the actual question was "is it realistic > to assume a text to a cellphone came from the number it *says* it came > from?" and I think the answer is "no, there are a few ways to spoof it". > > Received SMS messages are probably not evidentiary, absent a report from > the receiving carrier of the message traffic log involved, which would > itself be hearsay unless someone testified about it. > > Cheers, > -- jra > >