Your mail server requires SMTP Authentication, how do I set that up?

For step by step instructions for

Outlook and Outlook Express:

Open your Outlook client

Navigate to the tools menu, then select Account settings. From the Email tab, highlight your MaximumASP email account and select Change.

Verify that your incoming and outgoing mail server settings are set to use

Select the More settings box in the lower right hand corner then the Outgoing Server tab.

Check the box that says "My Outgoing server (SMTP) requires authentication and make sure that the button to "use same settings as my incoming server" option is checked. Click ok at that window, then close out of all other windows. SMTP authentication should now be enabled on your outlook client.

For Netscape:
There are no additional settings to enable SMTP Authentication in Netscape Messenger

If you are using a Mac:
For SMTP Authentication, make sure that your Mac users have Outlook Express 5.02, then...

Open the configured account that is having issues... Go to the servers tab.

At the bottom of the box you will see a 'click here for advance sending options' button. Click this button.

When the dialog box opens, click the 'SMTP server requires authentication' check box. By default, the 'Use same settings as incoming mail server' button is clicked.

Check 'Log on using' instead of 'Use same settings as incoming mail server.' In the account ID box, enter your Account as you email address, but instead of the '@' sign, use the '&' sign.

For Eudora:

We recomend upgrading upgrade to the latest verison of Eudora which is 5.x
1.. Open Eudora.
The Options window will display. If not, click Tools on the menu bar then Options.

2.. Scroll to the top of the list and Select Getting Started.

3.. Complete the fields:
a.. Real Name - The name from which any e-mail sent using this profile will display.
b.. Return Address - The address from which any e-mail sent will display. This is the address from which you may drop the mail from your domain name. For example:
c.. Mail Server (Incoming) - The mail server your incoming e-mail will go through.
d.. Login Name - Your user name (i.e., if your user name is, then login name is "bob").
e.. SMTP Server (Outgoing) - The mail server your e-mail sent using this profile will go through. You may use your ISP's outgoing mail server, or your IMail server, which will be
f.. Allow Authentication - you would want to check this box if you want to be prompted for a password when you check your mail.
4.. Click OK.

For Outlook 97, adding the Internet mail enhancement patch for Outlook 97 allows secure password authentication. The filename is Outlimep.exe; file size is 491 KB, and it is available at:

For Thunderbird:

To set up Thunderbird (or SeaMonkey) to use authentication with your SMTP server:

  • Go to "Tools -> Account Settings -> Outgoing Server (SMTP)".
(If using SeaMonkey: go to "Edit -> Mail & Newsgroup Account Settings -> Outgoing Server (SMTP)".)
  • Select the server and press the Edit... button.
  • Check the "Use name and password" option.
  • Add your username. Your username might be your full e-mail address (e.g.,
  • Click "OK".

Thunderbird will ask you for your password the first time you send email and you can optionally save it at that time.


Article ID: 59, Created On: 10/15/2001, Modified: 6/14/2010

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