Question : exchange certifacat

Hi ,
I am getting the following problem, and don´t know why I am getting that. I have a certifacat installed and enabled, but I still get the event id 12014, also when I visit the site in my web browser using https://mail.domain.com/owa  I get a certifacate error
Any one can help please.

Event ID: 12014
Microsoft Exchange couldn't find a certificate that contains the domain name MAIL.DOMAIN.COM in the personal store on the local computer. Therefore, it is unable to support the STARTTLS SMTP verb for the connector internet with a FQDN parameter of mail.domain.com. If the connector's FQDN is not specified, the computer's FQDN is used. Verify the connector configuration and the installed certificates to make sure that there is a certificate with a domain name for that FQDN. If this certificate exists, run Enable-ExchangeCertificate -Services SMTP to make sure that the Microsoft Exchange Transport service has access to the certificate key.
The following is what I get when I write Get-ExchangeCertificate
[PS] C:\Windows\System32>Get-ExchangeCertificate
Thumbprint                                Services   Subject
----------                                --------   -------
896B74B25F7EBF330C93E56DA2A76CFC6A7  ....S      CN=SERVERNAME NETBIOS NAME
136849A2963709E2753214BED76C7D6DB1E4A270  IP.WS      CN=MAIL.DOMAIN.COM, ...

AND HERE IS SOME MORE INFO ABOUT THE CERTS when I write get-exchangecertificate  | fl

[PS] C:\Windows\System32>get-exchangecertificate  | fl
AccessRules        : {System.Security.AccessControl.CryptoKeyAccessRule, System
                     .Security.AccessControl.CryptoKeyAccessRule, System.Securi
                     ty.AccessControl.CryptoKeyAccessRule, System.Security.Acce
                     ssControl.CryptoKeyAccessRule}
CertificateDomains : { SERVERNAME NETBIOS NAME, SERVERNAME NETBIOS NAME.DOMAIN.COM}
HasPrivateKey      : True
IsSelfSigned       : True
Issuer             : CN= SERVERNAME NETBIOS NAME
NotAfter           : 2/5/2011 10:03:31 PM
NotBefore          : 2/5/2010 10:03:31 PM
PublicKeySize      : 2048
RootCAType         : None
SerialNumber       : CED1C1111B11EAC111AC1C1111BC1
Services           : SMTP
Status             : Valid
Subject            : CN= SERVERNAME NETBIOS NAME
Thumbprint         : 896B74B25F7EBF330C93E56DA2A76CFC6A7

AccessRules        : {System.Security.AccessControl.CryptoKeyAccessRule, System
                     .Security.AccessControl.CryptoKeyAccessRule, System.Securi
                     ty.AccessControl.CryptoKeyAccessRule, System.Security.Acce
                     ssControl.CryptoKeyAccessRule}
CertificateDomains : {MAIL.DOMAIN.COM, SERVERNAME NETBIOS NAME, AUTODISCOVER.DOMAIN.COM
}
HasPrivateKey      : True
IsSelfSigned       : False
Issuer             : CN=AAA Certificate Services, O=XXX, L=XXX
                     d, S=XXX, C=XX
NotAfter           : 5/29/2013 1:59:59 AM
NotBefore          : 5/29/2009 2:00:00 AM
PublicKeySize      : 2048
RootCAType         : ThirdParty
SerialNumber       : 001111FAE711DF41E9A111F4B62E111
Services           : IMAP, POP, IIS, SMTP
Status             : Valid
Subject            : CN=MAIL.DOMAIN.COM, OU=XXX Unified Communications, O
                     U=Hosted by XXX, OU=XX, O=XX,
                     STREET=XXX, L=XXX  S=XXX, PostalCode=111
                     11, C=XXX
Thumbprint         : 136849A2963709E2753214BED76C7D6DB1E4A270

Answer : exchange certifacat

Type the below exchange command in Exchange management console

get-exchangecertificate -thumbprint 896B74B25F7EBF330C93E56DA2A76CFC6A7 | renew-exchangecertificate

then

Enable-exchangecertificate -thumbprint (Now the updated thumbprint of the above certificate) -services SMTP

Then for the second certificate

get-exchangecertificate -thumbprint 136849A2963709E2753214BED76C7D6DB1E4A270 | renew-exchangecertificate

then

Enable-exchangecertificate -thumbprint (Now the updated thumbprint of the above certificate) -services SMTP,IMAP,POP,IIS

Then restart Msexchange transport service and then update us
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