What does it say as your ISP at
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whatismyipaddress.com/Also, do you have a cox.net for your incoming mail? Are you on a Business or Residential connection? As long as your on a Cox Residential connection, and have a valid cox.net address for inbound (both email and username), outbound should work on port 25 with no authentication. Not that it really matters though, if its a laptop, then its better to set it up with Authentication, on port 587 with SSL, that way it will work anywhere, so perhaps its a blessing in disguise.