Hello, the more milters I use the more often I have to deal with certain hosts that do not need a milter processing. Currently I would have to develop exceptions for each milter to skip processing for some hosts.
It would be nice to have a feature as like this:
smtpd_milter_exceptions = ${permit_mynetworks}, ...
Or just milter_exceptions.
And as it is possible to define things like this:
milter_one = {
inet:[::1]:1234,
connect_timeout=5s,
default_action=accept
}
milter_two = {
inet:127.0.0.1:1235,
connect_timeout=300s,
default_action=tempfail
}
smtpd_milters = ${milter_one}, ${milter_two}, ...
...it would be nice to also have this included:
milter_two = {
....
milter_exceptions=${permit_mynetworks}, ...
}
It would improve speed and milter overhead. If Postfix does not connect to a
milter, because a rule tells it to skip, the email can proceed faster in the
system. And as a point of view in a milter:
Pseudocode for a classic milter:
xxfi_connect(...host...) {
if host in permit_mynetworks or some other address/mask:
set flag_to_skip_further_actions
}
xxfi_XYZ(...) {
if flag_to_skip_further_actions is set:
return CONTINUE
}
See what I mean?
Possible situation: Central SMTP-hub that gets connections from MX-ins and
internal servers, ...
Thanks in advance
Christian
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