nanog mailing list archives

Re: all major US carriers received text messages overnight that appear to have been sent around Valentine's Day 2019


From: Blake Hudson <blake () ispn net>
Date: Fri, 8 Nov 2019 13:18:08 -0600

Jared Mauch wrote on 11/8/2019 12:33 PM:

On Nov 8, 2019, at 1:26 PM, Matt Hoppes <mattlists () rivervalleyinternet net> wrote:

“During an internal maintenance cycle last night, 168,149 previously undelivered text messages were inadvertently sent to 
multiple mobile operators’ subscribers," Syniverse said in a statement.


how do you inadvertently send messages that were supposed to be sent but worked and sent? Isn’t that the desired 
outcome?
I run mailing lists.  I’ve had times where I find something stuck in the system and instead of just deleting it, I 
actually try to make sure it goes out based on the original intent.  This has resulted in me sending out e-mails a year 
or two later at times.

- Jared


Timing can be critical, which is why SMTP servers often expire and return queued messages after 12-72hrs (maybe a week at most). Any messages that can't be returned are eventually discarded and a message is sent to the mail server's administrator. Sounds like none of that actually happens within Syniverse's TXT/SMS delivery system. Someone is asleep at the wheel if 100-200k messages are stuck in queue for months.


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