Postmaster @ (or what are best practice to send SMS these days)

Deepak Jain deepak at
Wed Apr 16 23:37:17 UTC 2008

Verizon at least, uses SS7 signaling to deliver on-network SMS. This 
means they can provide delivery confirmation with their SMSes. I am not 
aware of another US network that does this or interacts with Verizon 
over SS7 for SMS exchange.

So, if you are using a phone's SMS capability on the same network (e.g. 
Verizon) and it has delivery confirmation you might be very happy.


David Coulson wrote:
> In my experience, even with TAP, sending messages to a cell phone is 
> spotty at best. I have folks on both uni-directional pagers via TAP or 
> SNPP, as well as cell phones via e-mail and TAP. There isn't a 
> noticeable difference in delivery time between e-mail and TAP on the 
> phones.
> Cell to Cell is probably the best option if you want to stick with SMS 
> to cell phones. I have no idea how reliable it is between carriers. I 
> still get some comfort knowing that people have pagers with a TAP 
> gateway - I've no idea how the technology differs between a pager and 
> SMS, but it seems much more reliable. All of the pager problems I've had 
> in the last few years have been, erm, 'payment related'.
> David Ulevitch wrote:
>> We've noticed that 1234567890 at is no longer a very reliable 
>> form of delivery for alerts from Nagios, et al.  It seems as our 
>> volume of alerts has risen, our delivery rate has dropped precipitously.
>> We don't expect much trying to actually reach a postmaster for 
>>   so I thought the better question would be to ask what the 
>> current best practice is to get SMS alerts out?
>> Back in the day, I remember a company I worked for had something 
>> called a TAP gateway.  Is that still a good route?  I've also been 
>> told to check out an SMS gateway/api service called  -- 
>> anyone using them to delivering timely notifications?
>> Is the best thing to do to try and get a programmable cellphone in a
>> datacenter?
>> What else are operators doing to get the pages out when things go wonky?
>> -David

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