I have an orcon email address which I use, amongst other things, for Trade Me. I noticed this new problem a while ago - when I send emails to Gmail users, they are usually dropped. If the other party emails to me first, my reply is usually allowed through, but even that seems hit and miss.

Do other orcon users have this trouble? 

Do you think it'll be at the orcon or gmail end?

[Mod edit (MF): company name spelling]