How to Change the Outgoing Mail (SMTP) Port in My Email Client
Change Your Outgoing Mail (SMTP) Port
Resolve email sending issues by configuring the correct SMTP port in your email client.
Understanding SMTP Port Settings
Many Internet service providers block port 25, the default SMTP port for outgoing mail. To bypass this restriction, you can use the alternative port 2525. Below are instructions for changing the SMTP port in popular email clients.
Mozilla Thunderbird
Follow these steps to change the SMTP port in Mozilla Thunderbird:
- Launch the Mozilla mail client.
- Go to Edit > Mail and Newsgroup Account Settings.
- Click on Outgoing Server (SMTP).
- On the right side, next to Server Name, it should say Port: 25.
- Change that number from 25 to 2525.
- Click OK.
- Restart Mozilla Thunderbird.
Microsoft Outlook and Outlook Express
Here's how to change the SMTP port in Outlook:
- Go to Tools > Accounts (or Account Options).
- Click on the Mail tab.
- Click on Properties.
- Click on the Advanced tab.
- Change the outgoing mail port from 25 to 2525.
- Ensure the box for This server requires a secure connection (SSL) is NOT enabled.
- Click OK.
- Restart Outlook.
Eudora for Windows
To change the SMTP port in Eudora 6.0 and newer versions:
- Navigate to your Eudora install directory.
- Find the directory called extrastuff.
- In this directory, find the file named esoteric.epi. Move this file into the main Eudora directory (up one level).
- Launch Eudora.
- Go to Tools > Options.
- Click on Ports.
- Change the port from 25 to 2525.
- Click OK.
- Restart Eudora.
Eudora for Mac
For version 6.0 and up, follow these steps:
- Quit Eudora and look in the Eudora Application Folder for the folder Extras.
- Drag the file Esoteric Settings into the Eudora Stuff folder.
- Launch Eudora.
- Go to Special > Settings.
- Click on Ports and Protocols.
- Change the port from 25 to 2525.
- Click OK.
- Restart Eudora.
Entourage
To change the SMTP port in Entourage:
- Go to Tools > Accounts.
- Click on Mail and go to Properties.
- Click on Advanced Sending Options.
- Ensure the box for This POP service requires a secure connection is unchecked.
- Check the box that says Override default SMTP port: and enter 2525.
- Click OK.
- Restart Entourage.
Tags: change SMTP port, email client configuration, Entourage, Eudora, outgoing mail settings, Outlook, SMTP port 25, SMTP port 2525, Thunderbird