In the Spring 2011 semester, mail.uh.edu system administrators implemented a system change to improve overall system performance and security. Email validation is now required to send messages from mail.uh.edu email accounts.

Email validation means that your reply-to email address must be your default mail.uh.edu email address in your email client software settings. When using the http://mail.uh.edu/ webpage to compose and send email messages, you are not affected by this change.

Your default mail.uh.edu email address should be listed as one of the following:

username@mail.uh.edu
Firstname.Lastname@mail.uh.edu

If you have recently attempted to send a message from your mail.uh.edu account and received an error that says "5.7.0 You have no permission to send mail on behalf of this person - Error: -17099" and the email does not send, you will have to change your reply-to email address in Microsoft Outlook 2011 for Mac to be your default mail.uh.edu address. Here is how to do it:

Microsoft Outlook 2011 for Mac
- Click on the Tools menu and select Accounts.
- In the window that appears, select the entry for mail.uh.edu in the left column.
- In the Email Address field, under Personal Information, enter your username@mail.uh.edu
- Click on the red "X" button in the upper-left corner of the window and save your changes, if prompted.

Tutorials
For a quick tutorial, with screenshots, on changing your mail.uh.edu reply-to address in Microsoft Outlook 2011 for Mac, consult the document attached below.

Support
If you have any additional questions about changing your mail.uh.edu reply-to address, email validation, or alternate email delivery options, please contact the UH IT Support Center (UITSC) at 713-743-1411, or via email at support@uh.edu .