nanog mailing list archives

RE: Email to text - vtext.com blacklisting ip


From: "Ryan, Spencer" <sryan () arbor net>
Date: Tue, 16 Aug 2016 23:17:02 +0000

I agree. Pay Pager duty or a SMS gateway with a SLA. Relying on  the free service for anything critical is asking for 
trouble.



Sent from my Verizon, Samsung Galaxy smartphone


-------- Original message --------
From: Josh Luthman <josh () imaginenetworksllc com>
Date: 8/16/16 6:09 PM (GMT-05:00)
To: Mike <mike-nanog () tiedyenetworks com>
Cc: NANOG list <nanog () nanog org>
Subject: Re: Email to text - vtext.com blacklisting ip

If it's critical I'd suggest a service than can depended on...

Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373

On Aug 16, 2016 5:45 PM, "Mike" <mike-nanog () tiedyenetworks com> wrote:

Hi,


    I have a server that monitors my network and issues text messages if
there are events of note that require human intervention. There is some
process filtering that ensures it also is not able to issue more than 1
alert maximum per 5 minutes, to ensure it doesn't flood pagers with
messages all screaming the sky is falling when things are not going well.
Recently however, this server is no longer able to deliver messages to
vtext.com - it gets nothing but 554 errors:


telnet 69.78.67.53 25
Trying 69.78.67.53...
Connected to 69.78.67.53.
Escape character is '^]'.
554 txslspamp10.vtext.com
Connection closed by foreign host.

Granted on some days during challenging times it can send 30 or 40
messages before we get to it and get it squelched / silenced, but it's
otherwise reasonably well behaved IMHO and I don't think we are any heavy
volume sender. So I am trying to figure out why it's blacklisted then and
am rolling snake eyes.  If anyone who is an admin for verizon or who has
any insight to share I'd certainly appreciate it. Email to text is a
critical function we depend on.


Thank you.





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