mailbox1 <mailbox@one>,;,,,	,,  	,,;group1:mailbox1@group1,  mailbox2@group2,,"mailbox #3" <mailbox3@group2>;, <mailbox@two>,,,,,,,,=?iso-8859-1?q?mailbox_number_3?= <mailbox@three>, =?abc?Q?mailbox?=   	 =?def?Q?_number_4?= <mailbox@four>