Robert Lopez a écrit : > In the past months there have been instances where pfishing was used > to get account credentials and use the victim's account to send > massive quantities of SPAM. > > Is there a way to configure postfix to detect such an event and/or to > stop such an event from reoccurring? > Is there a way to limit the number of email a person can sent in a > short period of time? > Is there a way to block sending an email if a maximum number of > recipients is exceeded?
use policyd to rate limit senders. you can also use a log parser to detect "anomalies" and add rules based on that. you can also filter outbound mail and "hold" if mail looks too spammy.
