Greg Sims:
> I know this is likely simplistic thinking -- but how about this in master.cf:
>
> outlook unix - - n - - smtp
> -o syslog_name=outlook
> -o smtp_connection_cache_on_demand=yes
> -o smtp_max_connections=8
There is no smtp_max_connections feature.
I suspect the real problem was that hundreds of domains were not
directed to the low-concurrency 'outlook' transport, and that
connection count 'overshoot' due to unused cached connections was
a red herring.
There is a rough idea of how to enforce strict connection counts
when connection caching is turned on. But it would not help in your
case, where the number of competing domains is 100x the number of
allowed concurrent connections. Under those conditions the feature
would behave as if connection reuse is turned off.
Wietse
