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

[Bill Campbell]

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.

Bill
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