To resolve the issue:
Click System Control, Options, System Options
On the System Format tab, next to System E-mail Defaults, click the blue arrow icon.
Enter the corrected email address
If a copy of each e-mail that is sent should be sent to someone, select the Copy E-mail to check box and enter the name of a recipient. This can be used as a way to obtain a copy of what was sent.
Click Save.
When complete, click Save.