Daniel A. de Araujo wrote: >Thanks Matt. The 2nd option looks fine, but we use Postfix. Do u (or >somebody) know how to implement this option at Postfix ? > > Try looking at smtpd_error_sleep_time and smtpd_soft_error_limit at this page:
http://www.postfix.org/rate.html I'm not really a postfix sort, but that's the closest set of commands I can find.
