Lähettäjä: Jeremy Harris Päiväys: Vastaanottaja: exim-users Aihe: Re: [exim] Smarthost + queue worker keep alive the connection
On 20/01/2020 11:17, Graeme Fowler via Exim-users wrote: > Put your first SMTP server in queue only mode, using 'queue_only = true' in your main configuration. This will prevent immediate delivery.
Other things you might consider:
- if this initial system is being fed with commandline-source messages,
rather than SMTP-source: use -odq for this big-batch feed. Then the
entire config needs not be queue_only, leaving a lower-latency service
for other work.
- limit the number of concurrent connections to the smarthost in the
initial system's transport. That way you automatically get queuing
as soon as the peak load batch starts up.
- If the messages in the batch are not personalised, use multi-recipient
messages (use bcc, not cc or multiple-to - to avoid cross-recipient info
leakage). This is a _big_ win for your initial-to-smarthost load.
