Distribution List usage in Outlook on an Exchange system
Distribution List addresses such as info@yourdomain.com is a distribution list, it is not really a true email account. Therefore, there is no way to send mail as the info@yourdomain.com. To use your info@yourdomain.com address, use the outgoing mail options in Outlook when creating the mail. Set the "Reply To" address to info@yourdomain.com so that on that mail, any recipient that presses the "Reply" button, their email client will send their reply. This is how it should be done, so recipients know who is sending them the message and their reply is automatically sent to the address of your choosing. Use the following instructions:
After starting to create the new email message as you normally would, press the 'Options' button shown in the highlight below.

In the next box that opens, check the box next to "Have replies sent to:" and type "info" in the text field as shown below.

Whatever mail you send, will arrive to the recipient as coming from either you username, but when they hit reply in their email client, it will use the info@yourdomain.com as their send to address.
If you have any questions, concerns, or need any additional information or help, please contact Layman's PC Sales and Service today.