Hello, i found by chance a strange phenomenon in my logfile: after three "rcpt to" to existing(!) addresses, which are marked with "milter=greylist, action=rcpt, reject=451 4.7.1 Greylisting in action, please come back later" as they are not yet known by milter-greylist, sendmail will respond with "Possible SMTP RCPT flood, throttling" if throtteling is enabled with "define(`confBAD_RCPT_THROTTLE',`3')dnl" Somehow, greylisting seems to be evaluated as "bad recipient" by confBAD_RCPT_THROTTLE, which seems to be wrong in this case. Ciao Marcus
Message
Possible SMTP RCPT flood, throttling and confBAD_RCPT_THROTTLE
2019-06-06 by Marcus Schopen