> Here goes on some feed back ...
>
> Very interesting - you seem to have backed up DJb's claims that a well
> connected host using single RCPTS is probably as good as one using
> multiple RCPTs. I always thought that Multiple would win hands down....
>
> One of my clients is into sending "customized - personal" messages to
> their members - and we've been looking at an mta solution.
>
> We are using sendmail - I'm a big qmail fan, use it it lots of places,
> but have been reluctant to change a working system. One of the
> arguments against was the multiple rcpt-to's that qmail does not
> support.
But a customized email can never use multiple recipients. So that can't
be an issue in your evaluation.
> My question is thus - When does a host become well connected ?
> The Suse box is at an ISP without good bandwidth, the Sun box is in one
> of the best connected places in the UK (were "well connected" is usually
> an order of magnitude below the US ). I would define well connected at
> anything above 512 mbits/sec.
I would say that both of these are well connected. But well connected
in this context probable means few packet losses and few timeouts
at the various layers including at the application layer (DNS, SMTP).
Regards.