I'm having trouble sending email through a comcast smtp server. Customer service has no idea where the problem lies.
So I did some reading and found that I could do some testing by connecting and sending an email through telnet.
So I connect ok, do the 'helo', the 'mail from;' and then the server says 'authentication required'. I don't know how to respond to that. I tried typing in my username, expecting it would then ask for my password, but it didn't. What does it expect from me? How should I respond?
Thank you, Chris