iPhone text to VOIP landline - will it return a failure message?

We have a new landline at home that runs off VOIP and cannot handle SMS messages, which we didn't realize before sharing our number with friends. If they text to it with their iPhones, will they get any kind of notification that it wasn't received or will will it just appear to them that their messages were sent but not replied to?

Has invited:

howapple - hello

Favor from:

I wondered because I tried to send an SMS message to it with an android phone and it just said "sent" but not whether it was received or not, and the landline gave no indication it received anything. I was wondering if iPhones are better about saying what happens to such messages.

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