I found that if add attachment to letter which were sent by maxbulk, mlm wouldn't work. There will be link in a letter. But it will linked to undefinite adress. for example:
http://u3274025.plsk.regruhosting.r...0LXRiNC10LPQviEJODgJCTEJb3Blbglubwlubw==&url= — this is link from letter without any other attachemnt.
this is with it: http://u3274025.plsk.regruhosting.r...0L7Qs9C+0LvRjAk4OQkJMQlvcGVuCW5vCW5v&url=
(both links are real, first count in mlm, it's from letter without attachment, second don't, it's from letter with atachment.
http://u3274025.plsk.regruhosting.r...0LXRiNC10LPQviEJODgJCTEJb3Blbglubwlubw==&url= — this is link from letter without any other attachemnt.
this is with it: http://u3274025.plsk.regruhosting.r...0L7Qs9C+0LvRjAk4OQkJMQlvcGVuCW5vCW5v&url=
(both links are real, first count in mlm, it's from letter without attachment, second don't, it's from letter with atachment.