Dears, I have a problem when i send the mail to group of adresses. On my work rather often i have to send mails to group of people and sometimes it is a bit less than 100 adresses. I do not face any problems with the sending, all work perfectly, but from time to time it happened that 1-2 adresses not work (maybe they were deleted by iserd or something else). In this case I have got error message "Unrouteable address".

My problem that Outlook do not indicate what exact adress have this problem so then i had to send adress by adress or by small groups in order to find out 1 of hungred mails which is problematic one. In other mail program where I worked before I had got mail where was indicated what exact mail had a problem. Maybe i need to make any settings in order to get this message as well?

Please advise

thank you