FWIW, AT&T does not suggest using the txt.att.net email for anything critical. In a previous role I handled public safety CAD, and AT&T (and Verizon, if I remember correctly) made it very clear that if you want to be able to send anything other than a miniscule volume of texts through the email-to-SMS gateway, you would need to pay for their enterprise messaging service. If the public safety agency/agencies in question subscribe to the FirstNet service, they should be able to reach out to their principal consultant (account team) and get a good resolution. V/r Tim ________________________________ From: NANOG <nanog-bounces+tim=mid.net@nanog.org> on behalf of Dan Walters via NANOG <nanog@nanog.org> Sent: Thursday, January 19, 2023 10:09 PM To: nanog@nanog.org Subject: txt.att.net outage? 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. Thanks, in advance. Daniel Walters Sr. Systems Admin Phone: 866.421.2374 ext.6213 Daniel.Walters@omnigo.com<mailto:Daniel.Walters@omnigo.com> [cid:image001.png@01D92C52.BEDD12C0] [cid:image002.png@01D92C52.BEDD12C0][cid:image003.png@01D92C52.BEDD12C0] [cid:image004.png@01D92C52.BEDD12C0]