Random Missing Emails

This may or may not be a security problem, but it does need to be addressed.

I am now using Gmail.

Before yesterday, I had been using Outlook X for over 10 years using same isp, and over time noted that I was not receiving all emails addressed to me. Emails my wife received with my address in the CC line, for example.

I verified this by sending emails to self using various other computers and having certain others send me emails with CCs to my wife's computer.

I advised the isp here and they could not solve the problem. In fact, after that, I believe they simply ignored me.

What would cause this? Any thoughts?

 

I know that gmail has a pretty good spam filter. Have you check to see of your mail went into either the spam or junkmail folders on your account?