On 3/9/23 16:25, Eduardo Diaz Comellas via mailop wrote:
Hi,Sorry for the rant, but I need to get this off my chest. Microsoft's MXs are accepting emails from one of my customers but then not delivering them to the recipient inboxes...Why can't they decide *before* accepting the email, like any sensible citizen?At least, they should send NDRs... :(
They don't seem to care about NDR. I have recently sent a mail from O365 to one of my personal accounts outside O365, and it was refused (with 5XX error) because some MS servers were on a blacklist. And I never got the NDR on my O365 account, so it seems they don't even send the NDR anymore to (at least some of) their own users either.
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