I’m trying to forward a mail. It works ok when there is only 1 recipient. But if I add more then one recipients, I got an exception that “One or more names are not recognized”. I checked smtp addresses , everything is Ok. Then I send a new mail (not a forwarding), these addresses work without any exceptions.

I’m developing an addinn, that sends mails programmatically and put put them in specyfied folders depending of the mail content.