Uing identities

I want to add two bccs to an identity. I'm in Account Settings | Manage identities | the relevant identity | Copies & Folders Under "When sending messages, automatically:" there is a check box and text box "Bcc these email addreses:" With the check box checked and a single address entered into the text box, it works fine. I cannot see how to add two addresses into this box so they are both bcc'ed. I've tried address1@domain,address2@domain address1@domain address2@domain address1@domain; address2@domain <address1@domain>,<address2@domain> <address1@domain> <address2@domain> <address1@domain>;<address2@domain> description1<address1@domain>, description2<address2@domain> description1<address1@domain> description2<address2@domain> description1<address1@domain>;description2<address2@domain> With a comma or semicolon delimiter only the second address is bcc'ed. A space a delimiter doesn't work. What format should I be using? Malcolm