Sender Field ('from') Displaying only Sender's Email on Received Notifications
JIRA e-mail notifications doesn't display the sender name.
The 'from' field only displays the account used by JIRA and there are no errors in the logs.
This may be caused by a transport rule in Microsoft Exchange 2003 and 2007.
Contact your infrastructure network administrator and review you Exchange Server configurations. A transport rule may be set up for JIRA's IP address, making the wrong name display. There is a discussion on a third-party blog post that may be helpful: http://social.technet.microsoft.com/Forums/en-US/exchangesvradmin/thread/2eea741b-1c31-44f6-a6c4-cdea506600f9/