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postfix queue admin: add screenshots and a bit of details

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Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
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Thomas Lamprecht 2020-06-04 16:36:37 +02:00
parent 7b7e406bc4
commit 0972c942e2
3 changed files with 18 additions and 3 deletions
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pmg-administration.adoc
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@ -174,6 +174,7 @@ combines the result from the first and second phase.
Postfix Queue Administration Postfix Queue Administration
---------------------------- ----------------------------
[thumbnail="pmg-gui-queue-admin-summary.png", big=1]
Mail-queues are one of the central concepts of the SMTP protocol. Once a 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. mailserver accepts a mail for further processing it saves it to a queue.
@ -184,7 +185,7 @@ If immediate processing is not possible, for example because a downstream
mailserver is not reachable, the mail remains on the queue for later mailserver is not reachable, the mail remains on the queue for later
processing. processing.
The 'Queue Administration' panel provides an overview about the current state The 'Queue Administration' panel provides a summary about the current state
of the postfix mail-queue, similar to the 'qshape (1)' command-line utility. of the postfix mail-queue, similar to the 'qshape (1)' command-line utility.
It shows domains for which mails were not delivered, and how long they have It shows domains for which mails were not delivered, and how long they have
@ -205,6 +206,20 @@ Delete all currently queued mail, for example if the queue contains only spam.
Clear the recipient verification cache. Clear the recipient verification cache.
A sudden increase of queued mails should be checked out closely. It can
indicate issues connecting to downstream servers.
This can also mean that one of the servers for which you relay emails sends
spam itself.
In the 'Deferred Mail' tab you can filter and examine deferred mail in more Deferred Mail
detail by looking at the headers. ~~~~~~~~~~~~~
[thumbnail="pmg-gui-queue-admin-deferred.png"]
In the 'Deferred Mail' tab you can examine each deferred email separately.
Besides providing the contact information about sender and receiver you can
also check the reason for an email being still queued.
You can view the complete headers and filter by sender or receiver of queued up
mails.
Here you can also flush or delete each deferred email independently.