Author: Jeremy Harris Date: To: exim-users Subject: Re: [exim] Newbie question on queues
On 06/03/2012 11:54, Justin Scott wrote: >> Just starting out on Exim and a bit confused as to the purpose of queues.
>
> I am new to Exim as well, but not new to e-mail delivery in general.
> The purpose of the delivery queue is a temporary holding tank for
> messages waiting to be delivered.
Exim *always* uses the queue. Quite briefly in most cases; a delivery
attempt is usually made immediately reception is accomplished,
and usually succeeds. This gives maximum flexibility consistent with
simplicity of coding and protection against data-loss.
Unless you're using my cutthrough-routing patch. Even then, the
queue-file is written (in case onward delivery gets a temporary-failure;
good delivery or permanent failures result in its immediate deletion).
