exchange Server 2010 Logs error and warning

Hi everyone,

today i open event viewer i saw some Error and warning i will upload this to help me to solve this problem:

1-The execution time of agent 'Connection Filtering Agent' exceeded 90000 milliseconds while handling event 'OnRcptCommand' for message with InternetMessageId: 'Not Available'. This is an unusual amount of time for an agent to process a single event. However, Transport will continue processing this message.

2-The average of the most recent heartbeat intervals [536] for request [Sync] used by clients is less than or equal to [540].
Make sure that your firewall configuration is set to work correctly with Exchange ActiveSync and direct push technology. Specifically, make sure that your firewall is configured so that requests to Exchange ActiveSync do not expire before they have the opportunity to be processed.

thanks in advance