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add minimal queue administration docs

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describe the buttons and their functions with the most common usage.

Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
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Stoiko Ivanov 2020-05-25 19:59:18 +02:00 committed by Thomas Lamprecht
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commit f2bd04399e
1 changed files with 35 additions and 1 deletions
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pmg-administration.adoc
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@ -178,4 +178,38 @@ the status is shown as 'queued/accepted' instead of 'accepted/<status>'.
Postfix Queue Administration
----------------------------
TODO
Mail-queues are one of the central concepts of the SMTP protocol. Once a
mailserver accepts a mail for further processing it saves it to a queue.
After the mail is either relayed to another system, stored locally
or discarded it is deleted from the local mail-queue.
If immediate processing is not possible, for example because a downstream
mailserver is not reachable, the mail remains on the queue for later
processing.
The Queue Administration view provides a succinct overview, as generated by
the 'qshape (1)' utility, about the current state of the postfix mail-queue.
It shows mails for which domains were not delivered, and how long they have
been queued.
The three Action Buttons on top provide the most common queue operations:
'Flush Queue'::
Attempt to deliver all currently queued mail, for example if a downstream
server has become available again.
'Delete All Messages'::
Delete all currently queued mail, for example if the queue contains only spam.
Attempt to deliver all currently queued mail.
'Discard address verification database'::
Clear the recipient verification cache.
In the 'Deferred Mail' tab you can filter and examine deferred mail in more
detail by looking at the headers.