Open Eudora.

Click on the 'Tools' menu and click 'Options...'.

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:

• 'Real Name':
  Your Name (eg. John Smith)
• 'Email Address':
  email@domain.tld (eg. john@test.com)
• 'Mail Server (Incoming)':
  mail.domain.tld (eg. mail.test.com)
• 'User Name':
  email.domain.tld (eg. john.test.com NOT john@test.com)
• 'SMTP Server (Outgoing)':
  mail.domain.tld (eg. mail.test.com)
• 'Allow authentication':
  Make sure this option is checked.

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 __ minute(s)':
  Change it to '15' minutes.
• 'Secure Sockets when Receiving':
  Change it to 'Never'.

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.
• 'Secure Sockets when Sending':
  Change it to 'Never'.

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:

Follow these instructions to use Windows Explorer to manipulate the Eudora installation folder and copy 'esoteric.epi' from the extrastuff folder to Eudora's root folder. Open Eudora and click on 'Tools' > 'Options...' > 'Ports' category at the very bottom of the category list.

Change the 'SMTP Port (25)' from 25 to 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.