On Fri, Nov 19, 2010 at 06:05:12PM +0530, Avinash Pawar // Viva wrote:
> I also noticed the number of TCP connections by *ss -s *command
>
> Whenever it goes beyond 900 then mail sending speed is 5-6 mails per second.
>
> When the connections are below 900 then the mail sending speed is 100-200.
You are confusing cause and effect. When delivery latency is low, the
concurrency is low. When latency is high, concurrency is high too.
You've said nothing about where the mail is going, whether the recipients
want it or whether it is spam, have provided no quantitative analysis
of the "delays=..." entries in your logs.
Bulk mail delivery is often slow, because receiving systems (Yahoo,
Gmail, Hotmail, ...) rate limit sending systems not in their whitelists.
--
Viktor.
