On Mon, Aug 19, 2019 at 10:34:51AM +0200, Matthias Schneider wrote:
> Chris, can you tell me your postfix version/settings?

mail_version = 3.4.5
milter_protocol = 6

(not sure what other settings are relevant here)

> But postfix (3.3.0 and 3.4.5) only sends about 24 body chunks per
> second to my milter application. Its the only milter configured and
> the milter is running on 127.0.0.1 (so no latency issues)

i tested over a unix domain socket

i imagine this is faster than tcp but haven't checked