On Wed, Apr 25, 2001 at 03:59:04PM -0700, Brett wrote:
> Does anybody know the maximum concurrency for sendmail? From what I
> understand, with the big concurrency patch, it's 500 for qmail but I can't
> find any data on sendmail. Thanks in advance.
sendmail doesn't have concurrency-limiting. With sendmail, there's
usually a daemon that triggers a one-concurrency queue-run. Also,
every message injected thru SMTP (or locally, for that matter) gets
one chance.
This 'one chance' strategy is disabled when the system load is above a
configured maximum. In that case *everything* gets queued.
Somebody else pointed out that sendmail starts one delivery process
per remote host. This is not my observation, but I can be wrong.
It comes down to: sendmail stops delivering when the load reaches a
configured maximum. No other concurrencylimits are in place.
Greetz, Peter.
