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Forum Discussion
RBK50 DNS errors when sending to SMTP server
Latest firmware 2.7.4.24. When sending from Outlook or iOS clients, cannot send, error AUP-CXDNS. Shutting off wireless circumvents the issue. Any DNS setting in the ORBI that might correct this? Tha...
Google search turned up a number of hits, mostly involving Cox Cable.
My ISP is in fact Cox, but the fact that sending email works normally when not connected to WiFi makes it hard (not impossible) to blame them.