said by PToN:
Yes, if the cellphone is using a 3G/4G connection, it would be an outside IP. This is what it looks like in my server when someone is using a cellphone:
192.168.50.22:993 184.108.40.206:37059 ESTABLISHED
If i terminate the connection, it will comeback once the client checks for email again...
Maybe i missed something, if so, my apologies.
So, are you saying someone with a cellphone might have been using my mail server to send 53,000 E-mails?
Thanks for your input.