Limitation for E-Mail sending
Is it possible to configure zimbra that mails can only be sent from internal ip addresses (WebMail)?
If an spammer finds out an weak password he can send all his spam over this server (firstname.lastname@example.org password: office EIFOK ).
I know it is easy to set up password rules, but not alwasy it is possible for me to do this. And it will also not help if an spammer finds out an "strong" password.
A workaround would be to limitate the number of E-Mails per hour (50). Is there a way to do this?
Release 7.1.2_GA_3268.UBUNTU8_64 UBUNTU8_64 NETWORK edition.