Hello,
I experiencing problems with Outlook non-domain clients. When they start Outlook the error appear:
"There is a problem with the proxy server's security certificate. The name on the security certificate is invalid or does not match the name of the target site mail.mydomain.com. Outlook is unable to connect to the proxy server"
Also credentials window appear.
The problem started to occur after the change of the certificate. Up today I had a wildcard certificate *.mydomain.com but I had to change it to SAN due to multiple domains handling.
Of course new certificate has different CN which is: mail.mydomain.com (was: *.mydomain.com).
I have assigned IMAP, POP and IIS services to the new certificate. When I assign IIS service back to old certificate, the problem
disappears.
I also changed the OutlookProvider EXPR CertPrincipalName parameter to mstd:mail.mydomain.com (was mstd:*.mydomain.com). Actually, there is no difference after changing this parameter.
Can anybody help with this issue?