When you upload a custom certificate to the vSphere Replication appliance, you see a warning even if the certificate is valid.
When you use the virtual appliance management interface (VAMI) in Internet Explorer to upload certificates to the vSphere Replication appliance, you see a certificate error:
The certificate installed with warnings. Remote VRM systems with the 'Accept only SSL certificate signed by a trusted CA' option enabled may be unable to connect to this site for the following reason: The certificate was not issued for use with the given hostname: vr_appliance_hostname.
Ignore this error, or connect to the VAMI by using a supported browser other than Internet Explorer.