On Thu, Jul 21, 2011 at 07:05:41PM +0000, Eric Smith wrote:
> Damn that was what I was afraid of?..
>
> >> So I am probably missing something in either my setup or in the log file
> >> hence why its included.
> >
> >No, the remote SMTP server not connecting to your server is not caused
> >by your configuration.
> >Do a tcpdump *on the internet connection*, to see what's what.
Actually, it can be your configuration if low throughput drives up
concurrency to the configured limit, and then connection service latency
climbs.
Poor throughput can be caused by many factors:
- Slow DNS resolution
- Inadequate disk I/O capacity
- Insufficient network bandwidth
- Misconfigured synchronous syslog (default Linux)
- Excessive cleanup header/body checks
- Slow proxy filters
- Slow milters
- Slow policy services
- Slow lookup tables (MySQL, ...)
...
--
Viktor.
