Open Eudora.

Click on the 'Special' menu and click 'Settings...'.

If it is not already selected, choose the 'Getting Started' category on the left.

Make sure that your settings look like the settings shown in this screenshot.

The following are the most important:

• 'User Name':
  email.domain.tld (eg. john.test.com NOT john@test.com)
• 'Mail Server':
  mail.domain.tld (eg. mail.test.com)
• 'Real Name':
  Your Name (eg. John Smith)
• 'SMTP Server':
  mail.domain.tld (eg. mail.test.com)
• 'Email Address':
  email@domain.tld (eg. john@test.com)

Click the 'Checking Mail' category on the left.

Make sure that your settings look like the settings shown in this screenshot.

The following are the most important:

• 'Check for mail every __ minutes':
  Change it to '15' minutes.

Click on the 'Sending Mail' category on the left.

Make sure that your settings look like the settings shown in this screenshot.

The following are the most important:

• 'Allow authorization':
  Make sure this box is checked.

Click on the 'Sending Mail' category on the left.

CANNOT SEND EMAIL?

If you can receive email however you cannot send email and the settings are exactly as shown above, change your outgoing mail (SMTP) port from the default of 25 to 1025.

To do this:

Click on 'Special' > 'Settings...' > 'Getting Started' category.

Change the 'SMTP Server' from 'mail.domain.tld' to 'mail.domain.tld:1025' (eg. mail.test.com:1025).

Background Reasoning:

In order to combat spam, some Internet Service Providers (ISPs) block traffic to external servers on port 25 so that customers using that ISP can only use the ISP's mail server. If that customer is going to spam, the idea is that they must use the ISP's mail server to spam and therefore be caught very quickly, and handled accordingly. Realizing that many ISP's mail servers have a more restrictive options (ie. not being able to send to more than 100 people at a time) as they are usually residential mail servers, we have opened an alternative port to allow you to send mail using our mail servers, one that the ISPs do not block. That port is SMTP port 1025.