Am 12.06.21 um 07:32 schrieb Noel Butler via mailop: > > these are confirmed legitimate emails being affected by MS not have rdns on > those servers, we will not whitelist, > there are many Australian ISP/ASP's being affected, its been discussed over > several days. > >
Ah, I had been seeing a different picture of those IPs as we're not located near Australia, so it's somewhat unlikely to receive legitimate mail from australian Microsoft cloud server, but for australian receivers the situation is clearly different. So configuring proper rDNS is indeed necessary if MS wants to use those IPs for outgoing SMTP. Cheers, Hans-Martin
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