Email to text - blacklisting ip

Ryan, Spencer sryan at
Tue Aug 16 23:17:02 UTC 2016

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 at>
Date: 8/16/16 6:09 PM (GMT-05:00)
To: Mike <mike-nanog at>
Cc: NANOG list <nanog at>
Subject: Re: Email to text - 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 at> 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
> - it gets nothing but 554 errors:
> telnet 25
> Trying
> Connected to
> Escape character is '^]'.
> 554
> 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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