Maximum Inbound Connection Timeout Limit is not 10 or less.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-18693	EMG2-117 Exch2K3	SV-20326r1_rule	ECSC-1	Low

Description

E-Mail system availability depends in part on best practices strategies for setting tuning configurations. This configuration controls the number of idle minutes before the connection is dropped. It works in conjunction with the Maximum Inbound Connections Count setting. Connections, once established, may incur delays in message transfer. The default of 10 minutes is a reasonable window in which to resume activities without maintaining idle connections for excessive intervals. If the timeout period is too long, idle connections may be maintained for unnecessarily long time periods, preventing new connections from being established. Sluggish connectivity increases the risk of lost data. A value of 10 or less is optimal.

STIG	Date
Microsoft Exchange Server 2003	2014-08-19

Details

Check Text ( C-22411r1_chk )
Access the mail server connection timeout configuration. Exchange System Manager >> Administrative Groups >> [administrative group] >> Servers >> [Server] >> Protocols >> SMTP >> [specific SMTP server] >> properties >> General tab Ensure the “Connection Timeout” value is = 10 or less. Criteria: If the ‘Inbound Connections Timeout Limit’ value is at 10 or less, this is not a finding.

Fix Text (F-19339r1_fix)
Set the Inbound Connection Timeout limit. Procedure: Exchange System Manager >> administrative groups >> [administrative group] >> Servers >> [Server] >> Protocols >> SMTP >> [specific SMTP server] >> properties >> General tab Enter "Connection timeout" value = 10. If a value less than 10 is desired for the site, and is documented in the System Security Plan, then enter a value less than 10.