Yes, My original problem was similar to this one, but I have since been able to send email. However, it is not consistent. Many times I get an error about there being an issue with my password, other times, as soon as the 'send email' bit goes true, it closes the socket connection for some reason. I can try to send an email over and over again and get very inconsistent behavior. I am using gmx over port 587.
I posted a new topic about it here,
But i hadn't gotten any bites yet, so I was looking around at other posts.