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How do I turn on SMTP Authentication?

               How do I turn on SMTP Authentication?
 SMTP Authentication is required when sending email out via most major ISP mail servers and most corporate mail servers. It is simply a username/password system which permits authenticated e-mail senders, just like most other computer accounts require authentication.


If you do not have SMTP Authentication turned on in your email software (Outlook, Entourage, Eudora, Apple Mail, etc.) you run the risk that the mail server will not recognize that you are a legitimate customer.


If the mail server is using spam filters (such as Spamhaus' PBL or XBL) it may refuse to take your email, because it thinks you are a stranger and your dynamic IP address is probably on Spamhaus' PBL list of dynamic IP addresses which mail servers should not accept mail from unless the sender is authorized to use that mail server.


To fix this, you need to turn on "SMTP Authentication", here's how:

In Microsoft Outlook & Outlook Express:

    Start Outlook 2000 or Outlook Express. From the menu, select Tools, then Accounts. Click once on the appropriate account from the Mail tab. Select Properties. From the account properties dialog box, choose the Servers tab. Put a check in the box for "My server requires authentication". Click on the "Settings" button. In the 'Outgoing Mail Server' dialog box, make sure "Use same settings as my incoming mail server" is selected. Press "OK". Back at the "Properties", click "Apply", then "OK". Click "OK" to close out of all dialog boxes.


In Eudora:


    Open Eudora, pull down the Tools menu and select "Options..." to display the Options window. Select the "Getting Started" category on the left-hand side. Select the "Allow authentication" checkbox and click "OK".


In Apple Mail:


    Open Apple Mail. Click on the "Mail" menu in the top menubar. Click on Preferences, Click on Accounts. Click on the account that you want to modify. Click on Account Information. Click on the "Server Settings..." button. In the pulldown list next to "Authentication:", select "Password". Enter your username and email password (the same ones you use to retreive your POP or IMAP email). Click on OK. Close the Preferences window by clicking on the X in the upper left hand corner of the window.


In Agent:


    Tools >> Servers and Accounts >> Outbound Email Server
    Connection: TLS if available
    Login Method: Username and password
    Advanced Settings: Port: 587


Wikipedia and Google have lots more information about "smarthosts" and "SMTP AUTH".


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