All email or domain addresses in an address rewrite list can be exported to a text file.
Steps
On the page Settings > Inbound/Outbound > Address Rewriting, click the Inbound Messages tab or the Outbound and Internal Messages tab to display the settings.
Mark the check box for the list to be exported and click Export.
From the Save As dialog box, select a directory to which to export the text file and click Save.
The selected address rewrite list is exported. A success message displays at the top of the Address Rewriting page.