Use Telnet to see if your isp's mail server requires authentication
NOTE - Use upper-case for commands where it's indicated.
Got to Start|Run and enter cmd
You'll see a dos box. Enter Telnet
(q/Quit at any time exits telnet. ? shows help)
Open a connection to your ISP's Email server by entering
o mail.ispname.net 25
(mail.ispname.net = whatever you use as the smtp/Send mail server in Outlook)
You should receive as a reply a bunch of connection messages ending with a "220" message:
220 ....
You then enter the domain you are sending the email from (Could be your isp's domain):
HELO www.mydomain.com
(Can actually be anything, but you should use your real domain name. In the future this will matter a lot - and for some mail servers, it matters now)
This should give you:
250 mail.ispname.net Hello www.mydomain.com ... Generic Greeting messages
Enter your email address at the ISP:
MAIL FROM: me@mydomain.com
Should Return...
250 2.1.0 me@mydomain.com ... Sender ok
Enter the recipients address:
RCPT TO: someone@anotherdomain.com
(use an address that doesn't belong to your isp)
Should Return...
250 2.1.0 someone@anotherdomain.com... Recipient ok
If it returns something like - RELAY NOT ALLOWED, Recipient IS NOT A LOCAL ADDRESS., then you need to authenticate.
You can end the session here by entering q
But if tyou actually want to send a message, enter...
DATA
If you want a subject for your email Enter...
Subject: - Whatever -
(Press enter twice)
Enter the boby of your message
When you're done, enter a single period (.) on a line by itself followed by hitting Enter.
The mail server should reply with: 250 2.0.0 ... Message accepted for delivery
If it doesn't, hit Enter again.
Close the telnet session by entering QUIT