H?bergement Arbre Binaire:
> I really appreciate your (very) thorough answer. I'll use it to search for
> a solution or devise a homemade one.
>
> The problem I'm describing affects so many web hosts... I'm surprised that
> this security problem has not been circumvented in any reliable way. I
> understand Postfix cannot fix alone the security issues of a web host, but
> a sensible sending default rate of let's say 500 mails/hour would solve a
> lot of common abuse situations without affecting normal traffic.
If submission rate limits are required, use SMTP instead of the
Postfix sendmail command.
Then you can use rate limiting policies in postfwd and the like.
Wietse
