Matus UHLAR - fantomas:
> >Matus UHLAR - fantomas:
> >> does prefix ".domain" apply for smtp_connection_cache_destinations?
> >> (debian's 3.5.6 doesn't seem to accept that).
>
> On 05.04.22 10:26, Wietse Venema wrote:
> >Is it documented to support this?
> >
> >What is documented is that smtp_connection_cache_destinations
> >supports type:name tables so you could specify a pcre: or regexp:
> >map.
>
> I was curious if this option supports (could support) subdomain/subnet
> matching like access tables do.
It makes sense for queries with a domain name, but that is not the
case here. smtp_connection_cache_destinations is queried with the
next-hop destination, which can include [] and :port information.
> >> I can name all those subdomains in smtp_connection_cache_destinations,
> >> set smtp_connection_cache_on_demand=no, but supporting .subdomains would be
> >> easier.
> >
> >Why DISABLE on-demand connection caching?
>
> I was under impression that disabling caching on demand turns is on by
> default. Perhaps incorrectly, and having it on by default requires putting
> kind of wildcard into smtp_connection_cache_destinations.
No, that is not the documented behavior.
smtp_connection_cache_on_demand enables connection caching
*conditionally*. The condition is that a destination has multiple
messages in the active queue so that Postfix can send messages
back-to-back.
smtp_connection_cache_destinations enables connection caching
*unconditionally* for the named destinations. This means it keeps
a connection open for several seconds even when the destination has
no email in the active queue.
I think that you can stick with the default settings, which
keep connections open only when they can be reused immediately.
Wietse
