Changing the SMTP port in Eudora

• Windows:
  
  1. Look in the Eudora directory (probably c:\program files\qualcomm\eudora).
  2. In the directory "extrastuff" you will find a file called "esoteric.epi". Drag it to the main Eudora folder.
  3. Start up Eudora. Go to Tools->Options->Ports.
  4. Type "25000" in the box for SMTP port.
  You may also need to:
  1. See Eudora's explanation for more detail.
  2. Look for a file in the Windows directory for a file called "services".
  3. Open it with Notepad.
  4. Look for a line that says "smtp 25/tcp mail".
  5. Change the "25" to "25000".
  6. Save the file and exit Notepad.
  7. If that line does not already exist, do not add it.
• Macintosh
  1. Quit Eudora and look in the Eudora Application Folder for the folder "Extras".
  2. In this folder is a file "Esoteric Settings". Drag this file into the "Eudora Stuff" folder.
  3. Launch Eudora and go to Special->Settings->Ports & Protocols.
  4. Type "25000" in the box for SMTP port.

This will affect all of your SMTP servers. Not just the SMTP server.

(Adapted from the original at http://www.eudora.com/techsupport/kb/1501hq.html.)