We have been using an internal Microsoft SMTP virtual services server to relay email to Office 365 for some time now with no issues. With the current change with Microsoft only allowing TLS 1.2 it ...

Microsoft has an update for Office 365/Microsoft 365 Exchange Online Basic Auth retirement in the case of SMTP. ... on-premises with a Receive connector that allows anonymous relay on ...

I'm looking to migrate my domain from on-premise Exchange to hosted Exchange on Office 365. I know Office 365 charges per user/mailbox, per month, but does anyone know if there are any limits on ...

Microsoft is working on adding SMTP MTA Strict Transport Security (MTA-STS) support to Exchange Online to ensure Office 365 customers' email communication security and integrity.