David I had a look thru that link, and confirmed it is POP3. Incoming port is 995, outgoing 25.  Secutity was not checked, so I did so. Then sent another test message and it would not go thru, with error oX800CCC78.   So I checked our other computer which is running Windows Live Mail. A test message could not be sent, with error oX800CCC78, with server error 550 Relay denied - unauthorised Protocol SMTP Port 25 Secure (SSL) -  no   So, since transition to TMC, we cannot send mail thru either computer.  My assumption is that it's a TPG problem, so I would like someone from TPG to talk with me and walk me thru the process. I did tring them for assistance two days ago but gave up after waiting nearly an hour.    Guess I'll have to try again, and hope I can get thru, or someone from TPG makes contact and can help me.   Thanks, nomad ... View more

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Hi david Thanks for your reply. This problem has been ongoing since transition to TMC.  I have been away from home more than at home and have not had achance to sort it out since then.  I'm not real computer literate, where do I find the port number and security setting? Thanks, Nomad  ... View more