This is just based on trial-and-error testing, but when I submit over 70 e-mail addresses at: https://www.yammer.com/[my domain]/admin/blocked_email_addresses I get one of the following errors: Nginx 502 Bad Gateway We’re sorry, but something went wrong. We’ve been notified about this issue and we’ll take a look at it shortly. When I submit 70 addresses or … Continue reading Yammer Enterprise Block Users appears to be limited to 70 users per submission