[SLL] mailhub relay without knowing accounts and throttling inbound by domain name and outbound with postfix?

[Kurt Buff]

Anvil? If your installation is newish, that might work, though I think
it's client-oriented. It's part of postfix.

On Thu, Feb 21, 2008 at 5:55 PM, Jeremy C. Reed <reed at reedmedia.net> wrote:
> On Thu, 21 Feb 2008, Bill Campbell wrote:
>
>  > On Thu, Feb 21, 2008, Jeremy C. Reed wrote:
>  > >I provide a mailhub (which does greylisting and more).
>  > >
>  > >I don't know the accounts for the target systems. I don't control the
>  > >target final mail destinations.
>  > >
>  > >Sometimes I get many queued emails that are "deferred (delivery
>  > >temporarily suspended" because "Error: too many connections from"
>  > >(my mailhub).
>  > >
>  >
>  > I would look at the smtpd_client_connection_count_limit and
>  > smtpd_client_connection_rate_limit settings in the main.cf file.
>
>  I don't have control of the target mail servers.
>
>  As for my incoming emails, "Not enough connections from the same remote
>
> host to really block on client connection rates (without limiting good
>  traffic)."
>
>  I want to:
>
>  - do similar to the  smtpd_client_.*_limit but for throttling outbound
>  emails.
>
>
>  - limiting how many target a specific domain in a set amount of
>  time (as I can have a good idea what is acceptable). Like
>  smtpd_client_recipient_rate_limit but not specific to one client and keep
>  track of @domain. For example (made up):
>
>  smtpd_domain_recipient_rate_limit = foo.bar:10
>  (or make that a map with information in a file)
>
>  to only allow 10 emails to @foo.bar during the time unit (60s).
>
>