Am 11.05.2013 14:34, schrieb Pol Hallen:
> I don't understand.
> 
> Situation: A real user using browser connect to squirrelmail and send a
> mail. It's ok.
> 
> But if this user create a mail bomb using squirrelmail how way to spam I
> can have this problem

well, nothing can really prevent you from bad users with valid logins
you can only mitigate the amount of spam until you recognize what
happens and you shut down the user account

the problem with webmail and such limitations is that you have
always the same client-ip and if the values are too low it
affects users which are not responsible for spam

so the solution is get rid of untrustable users and/or force
them at least to use a mail-client from their own IP/machine

anvil_rate_time_unit = 1800s
smtpd_client_connection_rate_limit = 50
smtpd_client_recipient_rate_limit = 400
smtpd_recipient_limit = 100

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