Microsoft Exchange couldn't deliver the message to this recipient because it didn't recognize you as a valid sender. Please verify that you have the correct sending address configured in your e-mail client and try sending your message again, or provide the following diagnostic text to your system administrator.
Microsoft Exchange Client Access server %1 attempted to proxy Outlook Web Access traffic to Client Access server %2. This ...
Microsoft Exchange couldn't apply the address list '%1' to the object '%2' because the filter rule (PurportedSearch) is invalid. ...
Microsoft Exchange couldn't complete the opt-in process for Microsoft Update %1. Please see http://update.microsoft.com and ...
Microsoft Exchange couldn't connect to %1 using credentials %2/%3. This may be because of an expired bootstrap account. Please ...
Microsoft Exchange couldn't deliver the message to this recipient because it didn't recognize you as a valid sender. Please ...
Microsoft Exchange couldn't determine the version of the Microsoft Update agent, or the Microsoft Update agent is not current. ...
Microsoft Exchange couldn't establish a signed and encrypted Kerberos LDAP connection to %1. Please ensure the domain controller ...
Microsoft Exchange couldn't establish an encrypted Kerberos LDAP connection to %1. Please ensure that the domain controller ...
Microsoft Exchange couldn't find a certificate that contains the domain name %1 in the personal store on the local computer. ...