KenK wrote:

Can't get Eudora to send and recieve email. Sitestar repeatedly says both
servers are

mail.sitestar.net

Eudora says can't connect. Connection timed out. Tried Eudora tech
support. No response.

Eudora was discontinued a long time ago. They moved to a fork of
Mozilla's Thunderbird, called Eudora OSE, but that got dropped a long
time ago, too.

https://en.wikipedia.org/wiki/Eudora_(email_client)

Tried several outgoing port numbers with no success -
25 default & 587.

In a command shell, "telnet mail.sitestar.net 587" works: I get
connected to the server, so the server is there and responsive. Can you
get to their mail server if you telnet to it?

Any guesses? I'm stumpted. Probably Thunderbird or other app will have the
same problem.

Have you tried booting into Windows' safe mode with networking and then
testing if Eudora works? Safe mode will likely get rid of any security
software (e.g., anti-virus, firewall) that you installed or any of the
startup programs that might interfere with the connection.