Dear All, Recently a DC (secondary DNS, No FSMO roles) failed in a virtual environment. This virtual disk got corrupted. This DC was restored with a backup that was about a month old. After this was brought online, replications seem fine. Mails are being delivered good but there is an error in exchange log. Event 12014, MSExchange Transport. Microsoft Exchange could not find a certificate that contains the domain name mailserver.domainname in the personal store of the local computer. Some help with this would be appreciated. Thanks.

Could you please run this command? Get-ExchangeCertificate | fl subject, certificatedomains, services And paste the results?

Luis, Please see below. I have replace with server name and domain with generic. Subject : CN=servername.domain.com CertificateDomains : {servername.domain.com} Services : UM Subject : CN=mail.domain.com, OU=Secure Link SSL, OU=IT CertificateDomains : {servername.domain.com} Services : IMAP, POP, IIS Subject : CN=servername CertificateDomains : {servername, servername.domain.com} Services : UM, SMTP

Zi, The above solution worked. However some users a being prompted by outlook to re authenticate at times.

Hi During the prompting, Check which Server is ask for authenticate. If it is CAS, thay might be due to Web Service. You can use a tool called Network Monitor to capture which part cause the authenticate. You could download from http://www.microsoft.com/en-us/download/details.aspx?id=4865 Also for how to use, please refer to http://support.microsoft.com/kb/812953 CheersZi Feng TechNet Community Support