error code -50

11. November 2013 · Write a comment · Categories: Outlook for Mac · Tags: , , ,
When I try to send an e-mail to a single person or a group of persons form my contact list, I get error code -50 (e-mail is not sent as result of not converted e-mailreceptant = rough translation). 
When I double click on the name of the person, the e-mail adress appairs, but still it is not sending. Even when I try to manually type in the e-mailadress, it automatically takes the contact person from my Contact Persons list (which is aparantly not converted in the right way). 

Who can help me to solve this? 

Thanks in advance, Wendy