Hi Petrik: Thanks. But could you tell me why? Or which knobs can I use instead? I just want to control the sending speed of postfix, how can implement?
-----邮件原件----- 发件人: Patrik Rak [mailto:pat...@raxoft.cz] 发送时间: 2009年11月10日 18:18 收件人: coofucoo zhang 抄送: postfix-users@postfix.org 主题: Re: who know how does initial_destination_concurrency and default_destination_concurrency_limit work? On Tue, 10 Nov 2009, coofucoo zhang wrote: > HI ALL: > I try to understand how the initial_destination_concurrency and > default_destination_concurrency_limit work? How can it support to improve > the output of delivery. I do a small test. > I config the postfix like this: > qmgr_message_active_limit = 50 > qmgr_message_recipient_limit = 50 > initial_destination_concurrency = 10 > default_destination_concurrency_limit = 10 > default_destination_rate_delay = 10s > > and then, I send 5 mail to one server, such as t...@a.com, 5 mail for the > other server, such as t...@b.com. > From the server side, I can see postfix send mail one by one. For instance, > from A.com, I can see 5 mails, each is 10s delay the previous one. B.com is > the same with A. > So I feel confuse about how can I use initial_destination_concurrency and > default_destination_concurrency_limit parameters. Because if I change these > 2 parameters to 1, the test result is the same. > > Does anyone know my problem? How can I make postfix work like the manual > described? Just don't use the default_destination_rate_delay. And, by the way, qmgr_message_recipient_limit is way too low. Better don't turn the knobs when you don't know what they are doing. Patrik
