At Small Business Hosting, all of our mailservers require SMTP Authentication to be enabled within your email program in order to send email through our servers. What this means is that in order to send out emails your email client will need to authenticate every time you send a message so that the server knows you have a valid email account and are allowed to send mail through it. Below are the steps on enabling SMTP authentication for the more common email clients:


Microsoft Outlook Express and Outlook up to and including 2002
Step 1) Click on the Tools Menu and then go to Accounts.
Step 2) Click your Email Account (so that it goes Blue) and then click on the Properties button.
Step 3) Clcik the 'Servers' tab, and at the bottom under 'Outgoing Mail Server' you want to tick the box next to 'My server requires authentication'.


Microsoft Outlook 2003
Step 1) Click on the Tools Menu and then go to Accounts.
Step 2) Click 'View or change existing email accounts' followed by clicking on 'Next'.
Step 3) Click your Emai Account (so that it goes Blue) and then click on Change.
Step 4) Click on 'More Settings'.
Step 5) Click on the 'Outgoing Server' tab and then at the top you want to tick the box next to 'My Outgoing Server (SMTP) requires Authentication'.


Microsoft Outlook 2007
Step 1) Click on the Tools menu and then go to Accounts.
Step 2) Click on your Email Account (so that it goes Blue) and then click on Change.
Step 3) Click on the 'More Settings' option.
Step 4) Click on the 'Outgoing Server' tab and then at the top you want to tick the box next to 'My Outgoing Server (SMTP) requires Authentication'.


Microsoft Outlook 2010/2013
Step 1) Click on the File menu and then go to Account Settings.
Step 2) Click on your Email Account (so that it goes Blue) and then click on Change.
Step 3) Click on the 'More Settings' option.
Step 4) Click on the 'Outgoing Server' tab and then at the top you want to tick the box next to 'My Outgoing Server (SMTP) requires Authentication'.


Mozilla Thunderbird
Step 1) Click on the Edit menu and then go to Properties.
Step 2) Scroll down to the 'Outgoing Server (SMTP)' at the bottom of the account list.
Step 3) Click on your existing SMTP server from the list and then click on 'Edit'.
Step 4) Under 'Security and Authentication' tick the box next to 'Username and Password' and then enter your Username and Password in the boxes provided.


MAC Mail
Step 1) Click on the Mail Option, go to Preferences and then go to Accounts.
Step 2) On the 'Account Information' tab, click your current server under the 'Outgoing Mail Server' tab.
Step 3) Click on the option to Edit the Server list.
Step 4) Select the Outgoing Server being used and then click on 'Advanced'. Ensure that 'Authentication' is set to password, enterting your email address and password in the fields provided.


Windows Live Mail
Step 1) Right click on your account in Windows live mail and select Properties.
Step 2) Click on the Servers tab
Step 3) Click on the ticbox that states 'My server requires Authentication' and then click on settings.
Step 4) Make sure that 'Use same setting as my incoming server' is selected.
Step 5) Click OK on all open windows and test you can send out emails.

If you use an alternative email client, please check the help file or manual for instructions on how to enable SMTP authentication.