Postfix Mail Delivery Process

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Postfix Architecture Overview

    http://www.postfix.org/OVERVIEW.html
    The smtp(8) client continues with some other mail delivery request. Meanwhile, any smtp(8) process can ask the scache(8) server for that cached connection and reuse it for mail delivery. As a safety measure, Postfix limits the number of times that a connection may be reused.

Postfix Performance Tuning

    http://www.postfix.org/TUNING_README.html
    The active queue becomes saturated with mail that has delivery problems. New mail enters the active queue only when an old message is deferred. This is a slow process that usually requires timing out one or more SMTP connections. All available Postfix delivery agents become occupied trying to connect to unreachable sites etc.

Postfix - Ubuntu

    https://help.ubuntu.com/lts/serverguide/postfix.html
    Postfix is the default Mail Transfer Agent (MTA) in Ubuntu. It attempts to be fast and easy to administer and secure. It is compatible with the MTA sendmail.This section explains how to install and configure postfix.It also explains how to set it up as an SMTP server using a …

Mail - postfix Server documentation Ubuntu

    https://ubuntu.com/server/docs/mail-postfix
    If this is the case it may be easier to use the above commands to configure Postfix for SMTP-AUTH than to use mail-stack-delivery. To install the package, from a terminal prompt enter: sudo apt install mail-stack-delivery You should now have a working mail server, but there are a few options that you may wish to further customize.

Postfix (software) - Wikipedia

    https://en.wikipedia.org/wiki/Postfix_(software)
    This delivery rate is an order of magnitude below the "intrinsic" limit of 2500 message deliveries/second that was achieved with the mail queue on a RAM disk while delivering to the "discard" transport (with a dual-core Opteron system in 2007). Mail systems such as Postfix and Qmail achieve high performance by delivering mail in parallel sessions.Initial release: December 14, 1998; 20 years ago

Mail - postfix - Guide - Ubuntu Community Hub

    https://discourse.ubuntu.com/t/mail-postfix/11325
    Jan 20, 2020 · If this is the case it may be easier to use the above commands to configure Postfix for SMTP-AUTH than to use mail-stack-delivery. To install the package, from a terminal prompt enter: sudo apt install mail-stack-delivery You should now have a working mail server, but there are a few options that you may wish to further customize.

Postfix Debugging Howto - MIT

    http://web.mit.edu/netbsd/src/gnu/dist/postfix/proto/DEBUG_README.html
    These reports not only show sender/recipient addresses after address rewriting and alias expansion or forwarding, they also show information about delivery to mailbox, delivery to non-Postfix command, responses from remote SMTP servers, and so on. Postfix can produce two types of …

Postfix - How to process outgoing emails? - Stack Overflow

    https://stackoverflow.com/questions/16250684/postfix-how-to-process-outgoing-emails
    To clarify my needs, I want to set a PHP script for Postfix so that each time an email is going out, a copy of that email is sent to my script. Filters in Postfix do this but the problem with them is that they are a part of Postfix's delivery process.

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