To setup Eudora using alternate port 587 for outbound smtp
This is for users of OnDeckTech’s Zimbra hosting services, however, it also explains how to configure Eudora more generally for other users, who will have to substitute their settings where appropriate.
- Click on Eudora in the menu bar at the top of the screen then click preferences.
- Then click “Getting Started” at the left hand side of the screen
- Change the Mail Server to macsuite.com
- Change the SMTP server to mail.macsuite.com:587
- Click “Checking Mail” on the left hand side

- Make sure the mail server reads macsuite.com
- Make sure “save password” is also selected
- Scroll down under Category and select Sending Mail

- Make sure “Allow authorization” is checked.
- Make sure “Use Submission port (587)” is checked
- Scroll down on the left menu (to the bottom of the list) and select SSL.

- Click on the drop down menu next to SSL for POP and select Required (Alternate Port)
- Click on the drop down menu next to SSL for SMTP and select Required (TLS)
- Make sure under “Standard Port SSL Negotiation” that Maximum Compatibility is Checked. Same goes for “Alternate Port SSL Negotiation”
- Click on Ok to save these settings.


