@sun.com email addresses will no longer work from March 24, 2012
By MiriamBrace - Oracle on Mar 11, 2012
For any customer sending in data to an @sun.com email address this feature will stop on March 24, 2012. This message has been communicated via the Oracle Systems Newsletter over the last 4 editions. If you don't receive the Oracle Systems Support Newsletter, please login to oracle.com and confirm you have checked the box to receive email from Oracle.
The alternative for sending explorer and other content to Oracle is via Oracle Secure File Transport Review Knowledge document 1362484.1 for further details.