Can't find bad addresses to delete

I send out emails to a personal group of names, but a number of them kick
back, no one by that name, etc. Despite many attempts to find the bad email
addresses in my personal address book, they aren't there, so I can't figure
out how to delete these invisible baddies. Anyone know how?

I tried to export the address book, in hopes a text file would yield the
missing names, but it would only export the contacts list, which is not
where I keep addresses.

MS sites have proven useless in my quest for help.

Thanks, and if you have the answer or ideas, please email me direct, I'll
never remember how to get back to this site.