At least one non-default transport event sink was found in the metabase of server {2}. Please check that this sink will not cause any harm to mail flows.
At least one internal DNS server must be specified in the InternalDnsServers parameter when the InternalDnsAdapterEnabled ...
At least one message has failed categorization. The messages will be deferred and retried because they were marked for retry ...
At least one message sent by the specified sender '{3}' (mail address: {4}) to '{1}' was found on server {2}. The tool will ...
At least one message that was rejected by the remote server will be deferred and retried because it was marked for retry ...
At least one non-default transport event sink was found in the metabase of server {2}. Please check that this sink will not ...
At least one of this store's database files is missing. Mounting this store will force the creation of an empty database. ...
At least one SMTP queue on server {2} is frozen and this can be a cause of mail flow problems. Please unfreeze the queues ...
Attempt to contact Autodiscover server {0} from ({1}), for Client Access Server information using NTLM for authentication. ...
Attempted to attach database '%4' but it is a database restored from a backup set on which hard recovery was not started ...