Unintended Disruption in WhatsApp Message Delivery for iPhone Users After Unboun

[Millz]

Last week, on Friday, a colleague implemented changes to the Unbound DNS settings in our OPNsense firewall, specifically altering the "Type of DNSBL" and adding a new list. Since then, a peculiar issue has surfaced where individuals using Android devices receive WhatsApp messages without any disruptions, while iPhone users encounter difficulties unless connected to a different network. Seeking assistance in resolving this discrepancy and understanding the impact of recent DNS modifications on iPhone connectivity to WhatsApp services.