The following table describes troubleshooting procedures and tips for mail services.
| 
 Task  | 
 Description  | 
 For Instructions  | 
|---|---|---|
| 
 Testing mail configuration  | 
 Steps for testing changes to the sendmail configuration file  | |
| 
 Checking mail aliases  | 
 A step to confirm that mail can or cannot be delivered to a specified recipient  | |
| 
 Testing the rule sets  | 
 Steps for checking the input and returns of the sendmail rule sets  | |
| 
 Verifying connections to other systems  | 
 Tips for verifying connections to other systems  | |
| 
 Logging messages by using the syslogd program  | 
 Tips for gathering error message information  | |
| 
 Checking other sources for diagnostic information  | 
 Tips for getting diagnostic information from other sources  |