I need some configuration tips for Postfix.
What I`m locking for is a moderate configuration, witch just filters out the worst.
The server has about 3000-4000 e-mail users.
Would you recommend using blacklist?
Witch rbl/dns sites should I add/are safe to use?
I have implemented some rate limits
smtpd_error_sleep_time = 1s
smtpd_soft_error_limit = 10
smtpd_hard_error_limit = 20
This should be ok?
It`s important that these rules don`t make trouble for clients.
I`m also thinking of implementing some of these limits
But I need some tips as what to configure here.
I do not want to make trouble for my clients, only give them a better service