Last I checked SMTP authentication will be made available in one of the upcoming release of vSphere 6.7. Log a SR with GSS to get more details about this.
At this time SMTP Authentication is still not supported.
You posted the same article as i did. It says is still not supported for the prior versions but now is in the new versions.
StartTLS support was added by default in:
- vCenter Server Appliance 6.7 U1 available at VMware Downloads
- vCenter Server appliance 6.5 U2d available at VMware Downloads
Prior to vCenter 6.7 U1 and 6.5 U2d these features are not available in the vCenter Server and vCenter Server Appliance. At this time SMTP Authentication is still not supported.
Since I'm not using anything prior to 6.7 u1 it is supported.
Right. STARTTLS with TLS 1.2 is available from 6.7 U1. AFAIK, Currently SMTP Authentication is still not supported on any version of vcenter.
Log a SR with GSS if you need confirmation on this.