Re: [courier-users] error message when couriertcpd reaches MAX* setting

[Sam V. <mr...@co...>]

Matus UHLAR - fantomas writes:

> Hello,
>
> when a SMTP client reaches maximum number of connections, I't like to send  
> the
> temporary error prior to closing connection.
>
> It should be something like
> "421 Service not available, closing transmission channel"
>
> would you find it useful to add parameter for couriertcpd to provide such
> info, or probably additional parameters to -maxperip,-maxperc,-maxprocs
> commands?
>
> there are some MTA's that flood our servers with too many parallel
> connections and I hope at least some would stop if rec eived error message
> instead of just connection closed...

Unlikely. Furthermore, if you're really being flooded, then having to send  
an error message instead of just dropping the connection is going to  
generate even more bandwidth.