[Postfixbuch-users] Que

[Sandy Drobic]

Christoph Lechner wrote:

Hallo Christoph,

die Teilnehmer dieser Mailingliste verstehen und bevorzugen Deutsch. (^-^)

> Hi all,
> 
> (running Postfix 2.3.8 from Debian old-stable)
> 
> for a Linux HA high availability setup, I configured a Postfix
> null-client (in a configuration path differing from the default). The
> null-client is intended on to run on the backup node only, while the
> master node runs the Postfix server doing all the work.
> 
> My main idea behind running a null-client on the backup node was to
> enable sending mail from that machine via the 'sendmail' command. An
> example of mails I want to be sent from the backup node is when the
> status of the RAID system changes.
> 
> The null-client setup is running just fine; when I telnet on that
> machine to localhost port 25, I can deliver mail anywhere I want.
> 
> But when I invoke 'sendmail' on the command line, nothing happens.
> Running grep showed that the mail is dropped in the 'maildrop' part of
> the wrong maildrop directory.
> 
> I thought it would be a good idea to have an extra queue directory (set
> via queue_directory in the config file) to avoid message loss. From the
> documentation of postdrop it appears that one can only drop in maildrop
> directories other than the default one if
> * one adds the configuration path for that setup to
> alternate_config_directories directive of the default main.cf
> * and specifies a parameter on the sendmail command line.
> The additional parameter is a problem, because I consider scripts
> monitoring the RAID system to be mission-critical. So I don't want the
> script to decide if the additional parameter has to be added or not.

Pro Instanz von Postfix gibt es nur eine Queue. alternate_config_directories
ist gedacht für eine Multi-Instanzen-Konfiguration.

Bei den wenigen Mails, die du für die Überwachung verschickst, brauchst du
keine Spiele mit Postfix zu betreiben.

> Is it possible to make sendmail/postdrop place the mail in the right
> maildrop directory (thus making the null-client pick-up the mail)
> WITHOUT changing the scripts invoking sendmail?
> Or is it just wrong to have two different queue directories for two
> independed postfix setups (at the same time only one of them is active)?

Du schiesst dir damit schnell in den Fuß, wenn du eine zu komplizierte
Konfiguration aufbaust. Ich weiss jetzt nicht, was genau du mit
Hochverfügbarkeit meinst, aber für normale Mail-/Relay-Zwecke ist eine
Einrichtung über mehrere MX-Einträge die normale Art, Redundanz für Mailserver
 zu schaffen.