Send and receive is working great with wireless and wired networks. I have tried at different locations to test. When using a phone or hotspot, emails are received but cannot send. It receives a message saying that the sender address has been rejected by the server. Turn it off and turn on wifi and it sends. I have tried both Verizon and ATT phones with no luck. Also tried different networks to rule that out and tested settings on items that worked previously until today. This is also an Exchange 2003 environment. Anybody ever ran into this problem?
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