Hi all,

As you may or may not know, Microsoft 365 has decomissioned TLS1.0 unless you opt in for legacy support by enabling it via PowerShell.

Sage 200 Evolution does not have an option to adjust the TLS version under the System Wizard which leads me to believe it still uses TLS1.0 only.
We have been successful in enabling legacy support for M365 and allowing TLS1.0 support however a Wireshark interrogation of the traffic indicates that outbound mail relay still occurs via TLS1.2, causing it not to work.

Thus, Microsoft 365 Exchange Online is not a valid SMTP configuration for Evolution?
SMTP relay and the "Send As" function is both not the problem, this has been enabled too and works when testing via PowerShell.

Anyone facing the same problem?