Not receiving SMS in Belgium (Proximus network)

  • Problem
  • Updated 3 years ago
Hi -

I've been trying to send test SMS messages to myself through the API (using https://github.com/marcuz/libpynexmo), and although I can see in the dashboard that the messages have been sent (and billed), they do not arrive on my phone.

I've tried the following:
- "To" formats: +32474....., 0032474....., 32474.....
- "From": alphanumeric and phone number in the above formats.

Still, no SMS'es received. Could it be because of strict SMS filtering on the network, or am I doing something wrong?

The code:

r = "json"
u = "xxxxxxxxxxx"
p = "xxxxxxxxxxx"

msg = {'reqtype': r, 'password': p, 'from': '32474xxxxxx, 'to': '32474xxxxxx', 'username': u}
msg.update({'text': "Hello, you."})

sms1 = NexmoMessage(msg)
print("SMS details: %s") % sms1.get_details()
print sms1.send_request()
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laundro

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  • still excited though.

Posted 3 years ago

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laundro

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Update: it does work on the Mobistar network.
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laundro

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Another update: BASE network is fine too. So I think Proximus is filtering the message... Is there any way around this?
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Tony Jamous, CEO

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Hi there,

Indeed carriers in Belgium filter.

http://nexmo.zendesk.com/entries/4005...

It is still unknown how exactly they do this. But can you test using a numeric sender in international format that is not a local number. e.g. 447565454323?

Let me know how it goes. If still no delivery, we can use different originating carriers to see if others are not filtered yet.

Tony
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laundro

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Hi Tony -

Still no delivery unfortunately. Thanks for looking into other carriers,

Mathieu
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Tony Jamous, CEO

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Hi Mathieu,

I've done some routing adjustments. Can you please try now with various senders?

Tony
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laundro

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Whoa, talk about customer service! :)

It works great now (except for alphanumerical sender ID; that's being shown as a UK number instead of the custom ID). Can that be fixed through routing adjustments?

Mathieu
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Tony Jamous, CEO

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With more complex filters, it seems to be the only way to delivery to this network at this stage. We have a roadmap of interconnecting locally to Belgium that will solve this issue, potentially. But have no ETA on this yet.
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laundro

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I can certainly live with that :) Thanks for the excellent support!