Have you tried setting up SNDS and JMRPP for your networks?
Have you tried opening a ticket with Microsoft?
Are you authenticating your mail properly?
Lots of useful information here:
https://sendersupport.olc.protection.outlook.com/SNDS/index.aspx
https://sendersupport.olc.protection.outlook.com/pm/troubleshooting.aspx
Cheers,
MV
On 2020-10-20 6:41 a.m., Daniele Rossi via mailop wrote:
Hi,
we try to send to Microsoft Account and we receive this message:
*Queued mail for delivery -> 250 2.1.5*
The problem is that the mail does not arrive either in spam or in the
inbox.
This happens for most of our ip's.
Can anyone explain this abnormal behavior to me?
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