These instructions assume you already have an email account setup in Outlook.
Both SingleEdge mail servers `mail2.singleedge.com` & `tmda.singleedge.com` require SMTP authentication before mail is allowed to relay (from external networks) through either servers. If you are having problems sending outbound email using Microsoft Outlook and receive an email bounce with an error like this:
Remote host said: 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
Then either your Microsoft Outlook mail client is configured incorrectly or your servers (here at SingleEdge) have not been setup by SingleEdge Superior Support to allow mail relaying through either of our SMTP servers. Follow these steps to successfully relay mail through either of our servers externally.
1. Open up Microsoft Outlook
2. Goto TOOLS --> Email Accounts

3. If not already checked, check the "View or change existing e-mail accounts" radio button
4. Click Next >

5. Select your account in the drop down list and click the Change button.

6. Verify that all of your email account settings are correct:
a. Your Name = Your name as it is displayed to and recipient.
b. E-mail Address = Your email address you want recipients to reply back to.
c. Incoming mail server (POP3) = mail.yourdomain.tld (Example: mail2.singleedge.com)
d. Outgoing mail server (SMTP) = mail.yourdomain.tld (Example: mail2.singleedge.com)
e. User Name = Your mail account on the server (email aliases will not work here) (Example: support@singleedge.com)
(Your username is critical and needs to be your full account + domain. Example: account@yourdomain.tld)
f. Password = The password that was set on the mail server (qmail toaster.admin)
7. Now click the More Settings button.

8. Then click the Outgoing Server tab in the Internet E-mail Settings dialog box.

9. Check the "My outgoing server (SMTP) requires authentication" check box
(Use same settings as my incoming mail server should be default)

10. Click OK
11. Click Next
12. Click Finish
NOTE: You must finish the E-mail Accounts wizard by clicking Next and Finish or the settings will not take effect.
After finishing the wizard, try and send a test email out. If you are still having problems, try restarting your Outlook or even your computer before asking for support.
Thanks
SingleEdge Support Team
support@singleedge.com
801-265-1035 x 1