Outlook 2002 and Outlook 2003

1. Start Outlook.
2. On the Tools menu, click E-mail Accounts.
3. Click View or change existing e-mail accounts, and then click Next.
4. Click your account, and then click Change.
5. Click More Settings.
6. Click the Advanced tab.
7. 

Outlook 2007

1. Start Outlook.
2. On the Tools menu, click Account Settings.
3. Click to select the target account, and then click Change.
4. Click More Settings.
5. Click the Advanced tab.
6. 

Outlook 2010

1. Start Outlook 2010.
2. Click Account Settings.
3. Select the email account from the list and click Change.
4. Click More Settings.
5. Click the Advanced tab.
6. 

Outlook 2013

1. Start Outlook 2013.
2. Click Account Settings.
3. Select the email account from the list and click Change.
4. Click More Settings.
5. Click the Advanced tab.
6. 

Outlook Express 5.x and 6.0

1. Start Outlook Express.
2. On the Tools menu, click Accounts.
3. Click the Mail tab.
4. Click your account, and then click Properties.
5. Click the Advanced tab.
6. 

Windows Live Mail 2008, 2009, 2011

1. windows settings for emailOpen Windows Live Mail.
2. Click the Accounts menu, and click the Properties button.
3. Click the Advanced tab. You can then update the port settings.
4. 

Mac Mail

1. From the Mail menu, choose Preferences.
2. In the Preferences window, click the Accounts button if it is not already selected.
3. In the Accounts list, if you have multiple accounts, click your email account.
4. Click the Server Settings button near the bottom of the pane.
5. 
6. 

Note! If you do not see a Server Settings button, click the drop down list, click "Edit Server List...", and click the "Advanced" tab.

Microsoft Entourage

1. From the Tools menu, choose Accounts.
2. Click the Mail tab.
3. Double-click the affected account.
4. Click "Click here for advanced sending options."
5. 

Thunderbird

1. Click the Edit menu, and choose Account Settings
2. Click Outgoing Server (SMTP)
3. On the right hand side click the server to modify and click Edit
4.