http://www.google.com/apps/intl/en/business/index.html

google tries to push you for a PAID account but you can use all of their services for your company for *free* if you use less than 50 users.

click the “Standard” link to get rolling

http://www.google.com/apps/intl/en/group/index.html

https://www.google.com/a/cpanel/yourdomain.com/Setup

https://www.google.com/a/cpanel/yourdomain.com/Dashboard

  1. Sign in to your domain hosting company’s website using the username and password associated with your domain.
  2. Navigate to an MX record maintenance page. MX records are special DNS (Domain Name Service) records, and are often located under sections titled “DNS Management,” “Mail Server Configuration,” or “Name Server Management.” You may need to turn on advanced settings to allow editing of these MX records.
  3. Delete any existing MX records before entering new MX records.
  4. For each MX record, enter information according to the entries in the following table.You may not be allowed to enter the priority values exactly as they appear in the table below; in that case, simply ensure that the server addresses are prioritized in the same order as they appear in the table. (i.e. The priority ranking [1, 3, 3, 5, 5, 5, 5] should work just as well as [1, 5, 5, 10, 10, 10, 10] so long as you keep the addresses in the right order.)

    If you’re asked to specify the type of each record you’re adding, enter “MX”.

    MX records often require the specific format of DNS records, including a trailing dot (“.”) at the end of any full-qualified domain names (e.g. “server.example.com.”)

    Set any TTL values to the maximum allowed.

    MX Server address Priority
    ASPMX.L.GOOGLE.COM. 10
    ALT1.ASPMX.L.GOOGLE.COM. 20
    ALT2.ASPMX.L.GOOGLE.COM. 20
    ASPMX2.GOOGLEMAIL.COM. 30
    ASPMX3.GOOGLEMAIL.COM. 30
    ASPMX4.GOOGLEMAIL.COM. 30
    ASPMX5.GOOGLEMAIL.COM. 30
  5. Change the SPF record to fight SPAM (optional)You may define the SPF record to authorize only certain IP addresses to send email for your domain. This will prevent spammers from sending unauthorized email under a forged address from your domain.

Please note that if you’re adding your Gmail address to Apple Mail 3.0 for the first time, your mail will be automatically configured for POP access. In order to configure IMAP, please follow these steps:
1.    Click Mail > Preferences….
2.    On the Accounts tab, click the + button to add a new account.
3.    Fill in the new window with the following information:
◦    Full Name: [your name]
◦    Email Address: your full email address [username@gmail.com, or username@your_domain.com for Google Apps users]
◦    Password: your Gmail password
◦    Important: please deselect the box next to ‘Automatically set up account’
4.    Click Create.
5.    Fill in the following Incoming Mail Server information:
◦    Account Type: Select IMAP
◦    Incoming Mail Server: Change this to imap.gmail.com
◦    User Name: your full email address [username@gmail.com, or username@your_domain.com for Google Apps users]
◦    Password: your Gmail password
6.    Click Continue.
7.    Enter the following Outgoing Mail Server information:
◦    Outgoing Mail Server: smtp.gmail.com
◦    Use Authentication: selected
◦    User Name: your full Gmail address [username@gmail.com, or username@your_domain.com for Google Apps users]
◦    Password: your Gmail password
8.    Click Continue.
9.    Review your Account Summary, and click Create.
10.    Check our recommended client settings, and adjust your client’s settings as needed.
You’re done!