Re: txt.att.net outage?

[Tim Burke <tim () mid net>]

Yep... SNPP or WCTP are typically what is used for the "enterprise messaging" product that the carriers offer. Most of 
them require either authentication, or providing a list of authorized destination numbers in advance to cut down on 
abuse.

________________________________
From: NANOG <nanog-bounces+tim=mid.net () nanog org> on behalf of Aaron de Bruyn via NANOG <nanog () nanog org>
Sent: Friday, January 20, 2023 8:28:39 AM
To: dwalters () omnigo com; William Herrin
Cc: NANOG mailing list
Subject: Re: txt.att.net outage?

I guess SNPP is still a thing:

$ host snpp.att.net<http://snpp.att.net>
snpp.att.net<http://snpp.att.net> is an alias for snpp.att.unimobile.com<http://snpp.att.unimobile.com>.
snpp.att.unimobile.com<http://snpp.att.unimobile.com> is an alias for 
snpp-att.gmes.syniverse.com<http://snpp-att.gmes.syniverse.com>.
snpp-att.gmes.syniverse.com<http://snpp-att.gmes.syniverse.com> has address 173.209.208.78
$ telnet 173.209.208.78 444
Trying 173.209.208.78...
Connected to 173.209.208.78.
Escape character is '^]'.
220 SNPP Gateway Ready
^]
telnet> quit
Connection closed.
$

-A

On Fri Jan 20, 2023, 02:24 PM GMT, Aaron de Bruyn<mailto:aaron () heyaaron com> wrote:
txt.att.net<http://txt.att.net> is returning MX records and those machines don't have port 444 open...

Wouldn't you want to be sending something like a SNPP message instead? It's a much less convoluted delivery process and 
is almost real-time (no queuing).

I guess it's been a decade or so since I've dealt with emergency services and paging...is SNPP even a thing anymore?

I looked at some old code I wrote (https://github.com/darkpixel/snppsend/blob/master/more-providers), and it doesn't 
look like snpp.attws.net<http://snpp.attws.net> exists.

-A

On Fri Jan 20, 2023, 02:12 PM GMT, William Herrin<mailto:bill () herrin us> wrote:
On Thu, Jan 19, 2023 at 8:09 PM Dan Walters via NANOG <nanog () nanog org> wrote:
Know this is a longshot, any chance anyone from the txt.att.net domain might be able to help us with what we believe is 
a blacklist block or possibly an outage?
We deal with 911 cad dispatching and is affecting first responders so looking to see if there is a faster way to 
resolution.

Hi Dan,

As I understand it, txt.att.net is a low-volume courtesy service not
intended for important communications. A paid service like Twilio can
handle production-grade SMS delivery.

Regards,
Bill Herrin

--
For hire. https://bill.herrin.us/resume/