Greetings, Viktor Dukhovni! >> On Dec 6, 2018, at 2:19 PM, Andrey Repin <anrdae...@yandex.ru> wrote: >> >> In other words, if I have multiple different messages to the same >> destination, >> I can't know if they will be delivered through single connection? >> And can't control it?
> If the inter-message spacing exceeds the either of: > http://www.postfix.org/postconf.5.html#connection_cache_ttl_limit > > http://www.postfix.org/postconf.5.html#smtp_connection_cache_time_limit > then any cached connections would be closed before it is time to send > another message. Generally, with serialized deliveries, you should not > cache connections. Keeping idle connections open is anti-social, you're > consuming remote resources. > A transport with a destination rate delay will not do demand caching, > which IIRC requires either concurrent or closely spaced deliveries > before it is enabled. > Bottom line, with rate delays, each delivery would be expected to use a new > connection. On demand connection re-use is not compatible with rate delays. Thank you for your assistance. I see how lingering connections could be a worse problem than multiple simultaneous connections. I'll have to think this issue through again. And probably start a new topic for it. -- With best regards, Andrey Repin Friday, December 7, 2018 0:12:45 Sorry for my terrible english...
