Sending mail to multiple servers

I have solved this now via installation of knot-resolver on all cluster nodes. I specify a FQDN which does not exist in public DNS in the PMG transport config and add multiple A-records for this FQDN in a custom hints-file for knot-resolver. Works with DNSSEC. Maybe it would be worth implementing this in PMG?
 
b.reiter said:
I have solved this now via installation of knot-resolver on all cluster nodes. I specify a FQDN which does not exist in public DNS in the PMG transport config and add multiple A-records for this FQDN in a custom hints-file for knot-resolver. Works with DNSSEC. Maybe it would be worth implementing this in PMG?
Click to expand...

Could you explain better the procedure as well as the result in production?
Thanks
 
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