[Rspamd-Users] Resolvers and Upstreams

[George Asenov]

Hello,

In the documentation there is a link to upstreams section.
But for me at least is unclear if this is only for the syntax or the 
resolvers selection can benefit from the monitoring function like with 
the upstream.

I'm asking because we have DKIM signing with "check_pubkey = true" which 
rely on DNS resolving. But we have cluster of over 40 private resolvers 
all around the world which are set like

nameserver = "hash:127.0.0.1:53,127.0.0.2:53....."  (ip addresses are 
just example)

Problem is that not all resolvers are up at any time and when DKIM 
signing module happen to try one that is not working then it doesn't sign.

Is there a way to have a health check for the resolvers to filter out 
temporary the nonworking entries?

-- 
Warm regards
George A.
WPXHosting