Postfix long delivery delay when sending 5000+ mails

Lox at
Thu Apr 14 06:16:34 UTC 2011


2011/4/13 Gerald Drouillard <gerrylist at>

> Just reduce so you don't try 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>

> 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....

2011/4/14 Paul Graydon <paul at>

> 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?

Thanks guys.

Lox at
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the ubuntu-server mailing list