I’ve been using Gmail instead of Outlook for about a year now. However, despite configuring Gmail to list my “from” address as @psu.edu, some recipients were still seeing my messages come through as “on behalf of” email@example.com. Although bothersome, I just never got around to figuring it out.
Today I finally decided to see if it could be fixed. It turns out Google has addressed this problem. First, read this Gmail blog post. For most users, this should be enough. However, in the case of my Penn State account, it took some digging to find the settings. In particular, for Penn State you will need to use authsmtp.psu.edu (and not smtp.psu.edu) as your outgoing mail server. Also, use port 587. However, contrary to the instructions in the Penn State knowledge base, do NOT check the box for SSL encryption.