Delivery & compliance
Pony Express HQ
Possible causes for Message Delivery Error 30005 - Unknown destination handset. 1. The number you are trying to reach is unknown or no longer exists.
Message Delivery - Unknown destination handset
Error - 30005
Possible Causes
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The destination number you are trying to reach is unknown and may no longer exist.
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The device you are trying to reach is not on or does not have sufficient signal.
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The device cannot receive SMS (for example, the phone number belongs to a landline)
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There is an issue with the mobile carrier