Mail in Mac OS X

From Lunarpages Web Hosting Wiki

This tutorial is for all our Mac-loving clients. Apple computers have their own e-mail client built into the operating system. Here is how you would setup your e-mail address to work with Mac OS X Mail.

Setting Up Mail in Mac OS X

First, gather some information about your e-mail account. Your Internet service provider or network administrator provides the information:

  • Type of e-mail account you have (POP or IMAP)
  • Your e-mail address
  • Your account password
  • Mail server ("host") name or names (

Tip: Some Internet service providers may use one mail server for incoming and outgoing mail. Others may use two servers. If only one server is used, use the same server name twice where it is required by Mail. For Lunarpages clients, please use

Next, follow these steps to configure Mail:

  1. Open Mail.
  2. Choose Preferences from the Mail menu. If you have not yet set up any accounts, the Mail Setup window appears, and you can skip to Step 7.
  3. Click the Accounts icon in the Mail Preferences window.
  4. Click Create Account.
  5. Choose the correct account type from the pop-up menu.
  6. In the Description field, type any name you would like to use to identify the account. This is the name that will appear in your list of accounts.
  7. Using the rest of the information you gathered, complete the rest of the fields. If your Internet provider gave you an SMTP password, be sure to click the checkbox to enable the "Use authentication when sending mail" option. If your Internet service provider does not require this, simply leave the two fields below the checkbox empty.
  8. If desired, click the Account Options tabs to change the default account behavior.
  9. Click OK when you are finished.

Repeat these steps for any other accounts you want to set up. (Instructions via

Change the Server Port to "587"

Port 25 is the port used to send email via the Internet. Some Internet service providers (ISPs) block port 25 when you are outside the ISP's network, to reduce the amount of junk mail originating from their domain. By blocking port 25, the ISP forces its customers to use the outgoing (SMTP) mail server provided by the ISP, rather than the SMTP server on their computers, so the ISP can monitor the outgoing mail and track down junk mail senders.

If your ISP is blocking port 25 but not port 587, change the port to 587 and try again. Choose Mail > Preferences, and click Accounts. Select your e-mail account, then click Account Information. Click the Server Settings button and then replace 25 with 587 in the Server port field. Click OK and close the Preferences window. Try sending your message again.

Snow Leopard OS X Mail Problem

There appears to be an issue with the latest Mail program that comes with OS X Snow Leopard. If you leave the SMTP port to the default setting, which is to auto-detect the port, it has a high chance of failing. You will need to click the radio button to manually select the port and enter it there.

Go to Preferences > Accounts, select your account, then click on the popup menu next to "Outgoing Mail Server (SMTP)" and pick "Edit server list". Then pick the SMTP server you are using, then click on Advanced, and apply the "Use custom port" setting.

More Mail in Mac OS X Help