Postfix long delivery delay when sending 5000+ mails

[Paul Graydon]

On 04/13/2011 08:16 PM, Lox wrote:
> Hello,
>
>
> 2011/4/13 Gerald Drouillard <gerrylist at drouillard.ca 
> <mailto:gerrylist at drouillard.ca>>
>
>     Just reduce main.cf:default_process_limit so you don'ttry to run
>     an insane number of email deliveries in parallel.
>
>
> I increased that value because I thought that sending more mails in 
> parallel will increase the postfix mail queue delivery....
>
>
> 2011/4/13 Loïc Minier <loic.minier at ubuntu.com 
> <mailto:loic.minier at ubuntu.com>>
>
>     There might be
>      ways to have multiple queue managers, but ISTR that's kind of
>     hackish,
>      so you might want to use multiple instances of Postfix instead if you
>      go down that path.
>
>
> Running two separated instance of postfix could be the solution has I 
> have two ips on my server. But I have honestly no idea on how to set 
> that up....
In the main.cf file there is a setting inet_interfaces, you can specify 
there which IP address to listen to, or even port.  You could then run 
postfix twice using different config files.
>
> 2011/4/14 Paul Graydon <paul at paulgraydon.co.uk 
> <mailto:paul at paulgraydon.co.uk>>
>
>     We use the following to restrict concurrency and rate:
>
>     default_destination_concurrency_limit = 2
>     default_destination_recipient_limit = 5
>     default_destination_rate_delay = 60s
>
>
> Should I apply does settings on the postfix instance dedicated to 
> newsletter sending? Or should I apply those to my main postfix server?
Yes, that'd be my suggestion anyway.

Paul
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