On Wed, 2004-08-25 at 18:20 -0700, Fred Viles wrote:
> You could try disabling pipelining via pipelining_advertise_hosts.
> pipelining_advertise_hosts is "expanded before use" so you could
> possibly disable it conditionally for the offending user's hosts.
>
> FWIW, I disable pipelining for an external connections here, because
> it makes smtp_enforce_sync *way* more effective at blocking
> spamware/malware generated messages. But mine is not a high volume
> site...
aha, this is a useful setting to tweak. let me suggest:
pipelining_advertise_hosts = ${if eq {$sender_host_name}{$sender_helo_name}\
{*}{}}
now only hosts with matching EHLO argument and DNS will be able to use
PIPELINING. it's good to "reward" correct implementations.
since Outlook _never_ gets EHLO right (doesn't send FQDN), this will
turn off PIPELINING for those users, too :-)
--
Kjetil T.
