I installed postfix and dovecot on Ubuntu 10.04 using pdm-ubuntu-10-04-x86-v1.4.3. It set up a MySQL database for my domain and user data. I used it's ./manage to create a user. When I created an account in my outlook express (on my windows computer) It acts like I am putting in a bad password. I know it's connecting enough to try because the server name is like mail.domain.com and if I change that to cname.domain.com I get "the host ... could not be found", so I changed it back.
If I telnet from my linux shell, I can access dovecot and even read mail that I sent to myself from my yahoo account. If I telnet from my windows cmd, I get "-ERR Plaintext authentication disallowed on non-secure (SSL/TLS) connections."
I thought that might be a clue, so I went back to Outlook Express and turned on "Log on using secure password authentication" but then I get an error from OE
"Unable to logon to the server using Secure Password Authentication. Account: 'TecBrat', Server: 'mail.domain.com', Protocol: POP3, Server Response: '.', Port: 110, Secure(SSL): No, Error Number: 0x800CCC18"
What should I try next?
(I'm pretty new at this, so if you ask me to show a log or config file, please show me the expected path to find it.)