I can't send email using SMTP port 25

If your ISP (the company you are using to connect Internet) is blocking SMTP port 25, you may have problem sending emails using Port 25 via Outlook or other email clients.

You have two options:

  1. Change your email client to send email using port 587 instead of port 25.

  2. or Use web based email services. Web based e-mail is unaffected by port 25 blocking.
How to change your SMTP port from 25 to 587;

Outlook Express

1. Open Outlook Express.
2. From the Outlook Express Tools menu, click Accounts
3. Click the Mail tab
4. Select your email account
5. In the Properties dialog box, click the Servers tab
6. Click the Advanced tab
7. View the Outgoing mail (SMTP) Port and change it to 587 and save.

Outlook 2000

1. Open Outlook 2000
2. Click the Tools menu and then click Accounts
3. Select your email account
4. Click Properties
5. In the Properties dialog box, click the Servers tab
6. Click the Advanced tab
7. View the Outgoing mail (SMTP) Port and change it to 587 and save.

Outlook 2002/03

  1. Open Outlook 2002/03
  2. On the Tools menu, click E-mail Accounts
  3. Click View or change existing e-mail accounts
  4. Select your email account
  5. Click Change
  6. Click More Settings
  7. Click the Advanced tab
  8. View the Outgoing mail (SMTP) Port

Entourage

  1. Open Entourage
  2. On the Tools menu, click Accounts.
  3. Select your email account
  4. Click Edit
  5. On the Account Settings tab, in the Sending Mail section, click “Click here for advanced sending options.”
  6. View the Outgoing mail (SMTP) Port

Eudora

  1. Open Eudora
  2. Open Eudora
  3. Scroll down in the navigation pane and click Ports.
  4. View the Outgoing mail (SMTP) Port

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