From 1824eab9da089ddc4495e4eb55594ea2b8c756df Mon Sep 17 00:00:00 2001 From: Stoiko Ivanov Date: Thu, 23 Apr 2020 15:29:43 +0200 Subject: [PATCH] rephrase before/after queue filtering for clarity starting the listing with before/after queue filtering makes it easier to scan through the document, especially if we refer to it with the same words below. Huge thanks to Daniela for suggesting the edit. Signed-off-by: Stoiko Ivanov Reviewed-By: Aaron Lauterer --- pmgconfig.adoc | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/pmgconfig.adoc b/pmgconfig.adoc index 7b2d1f7..da5e38b 100644 --- a/pmgconfig.adoc +++ b/pmgconfig.adoc @@ -308,23 +308,23 @@ Before and After Queue scanning Scanning email can happen at two different stages of mail-processing: -* During the SMTP Session after the complete message has been received (after - the 'DATA' command), known as 'before queue filtering'. +* Before-queue filtering: During the SMTP Session, after the complete message + has been received (after the 'DATA' command). -* After intially accepting the mail and putting it on a queue for further - processing, known as 'after queue filtering'. +* After-queue filtering: After initially accepting the mail and putting it on + a queue for further processing. -The former has the advantage that the system can reject a mail (by sending a -permanent reject code '554'), and leave the task of notifying the original -sender to the other mailserver. This is of particular advantage if the -processed mail is a spam message or contains a virus and has a forged +Before-queue filtering has the advantage that the system can reject a mail (by +sending a permanent reject code '554'), and leave the task of notifying the +original sender to the other mailserver. This is of particular advantage if +the processed mail is a spam message or contains a virus and has a forged sender-address. Sending out a notification in this situation leads so-called 'backscatter' mail, which might cause your server to get listed as spamming on RBLs. -The latter has the advantage of providing faster delivery of mails for the -sending servers, since queueing mails is much faster than analyzing it for -spam and viruses. +After-queue filtering has the advantage of providing faster delivery of +mails for the sending servers, since queueing mails is much faster than +analyzing it for spam and viruses. If a mail is addressed to multiple recipients (e.g. when multiple addresses are subscribed to the same mailinglist) the situation is more complicated: Your