Am 28.12.2012 18:38, schrieb John Allen: >> A resident LMTP daemon uses fewer CPU cycles than a process that >> is created once for each delivery, but with 30 users the difference >> matters only if you have a 15-year old computer (i.e. the technology >> that was available when I started work on Postfix). >> > My concern is more with reliability, does moving mail between stack > components gain anything from either LDA or LMTP?
practically you can say a full featured network-service is mroe reliable than a simple pipe at least not less, LMTP is a standard protocol mostly identical with SMTP status codes via LMTP/SMTP are AFAIK more flexible compared to a unix-pipe it may be a important information for postfix if the asnwer was 4xx or 5xx while 4xx is a temporary error which means "try later, do not reject nor bounce"
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