Contact w/ clue re: AT&T SMS email gateway?

Aaron D. Osgood AOsgood at
Tue Sep 22 21:02:24 UTC 2009

Point of note: NONE of the cellular carriers treat SMS messages as "data".
SMS messaging is carried on the "Control" channel that works similar to the
"D" channel on a PRI

Aaron D. Osgood

Streamline Solutions L.L.C

P.O. Box 6115
Falmouth, ME 04105 

TEL: 207-781-5561
FAX: 615-704-8067
MOBILE: 207-831-5829
AOsgood at

Introducing Efficiency to Business since 1986.

-----Original Message-----
From: Erick Bergquist [mailto:erickbe at] 
Sent: Tuesday, September 22, 2009 2:55 AM
To: nanog at
Subject: Re: Contact w/ clue re: AT&T SMS email gateway?

I am having this problem the past week or so as well, along  with some
Have a iPhone 3GS also. However, seemed to be fine Monday. 

----- Original Message ----
From: Crist Clark <Crist.Clark at>
To: nanog at; Dave Pascoe <dave at>
Sent: Thursday, September 17, 2009 3:31:51 PM
Subject: Contact w/ clue re: AT&T SMS email gateway?

>>> On 9/17/2009 at 12:03 PM, Dave Pascoe <davekm3t at> wrote:
> Recently something seems to have changed with the email to
> SMS gateway.  Messages sent through the gateway suffer from the following:
> 1) Long delay in reaching the phone (intermittent)
>    (yes I know there is no latency guarantee)
> and, even more crippling,
> 2) Message comes through as just "SMS Message" instead of the SMTP
> message content.  And the sender is always 410-000-01x, where x
> increments by 1 with each new incoming email-to-SMS gateway-handled
> Phone is an iPhone 3GS.  This has worked fine for quite a while.  No
> changes on the iPhone.
> I have gone through normal AT&T Wireless Customer Service but there
> isn't much clue there - had to explain what an email to SMS gateway is.
> Anyone elese seeing this?  Anyone from AT&T Wireless here?

If you do find anyone, can you ask them about the really annoying
reject-after-DATA problem?

That is, if 555-555-1234, for some reason is not authorized to receive
SMS, you get a 250 response after RCPT TO, but a 5xx after the DATA
is sent. So if the message had multiple recipients, some of which are
allowed to receive SMS, the message then fails for all of them.

Verizon also has this problem, BTW.


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