| Troubleshooting – Samples |
 |
| Home > Technology>Qmail Based Mail Server Management >Troubleshooting – Samples |
| |
| SMTP servers not responding |
| Alert – From Nagios (monitoring system) |
 |
Alert raised to Level II support Eng. |
|
Check the system log |
|
Check for the Spam attack |
|
Check the queue status |
|
Check for the SMTP concurrency |
|
Check for the in-coming mails - rate of incoming |
|
Corrective action depending on previous analysis |
|
| |
| Queue getting accumulated |
| Alert – From Nagios (monitoring system) |
|
Alert raised to Level II support Eng. |
|
Check the status of the queue with Qmailctl and qmHandle |
|
Check for distinction of Local or remote queue |
|
If remote queue check the mail marks or the delivery failures |
|
If local , check for the log / or any changes in configuration |
|
If local check for spam log / anti virus logs for the delay |
|
Increase the concurrency to sort it temporarily |
|
Corrective actions |
|
| |
| Mail sending and receiving from the client side too slow |
| Alert – From Nagios (monitoring system) |
|
Alert raised to Level I support Eng. |
|
Check the response via telnet command from remote and on the local via SSH login |
|
Check for RBL response if any |
|
Check for DNS setting if any |
|
Check for CPU loads |
|
Check for system load |
|
Check for bandwidth utilization |
|
check for SMTP and pop concurrency |
|
check network hops |
|
Corrective action |
|
| |
| Mail not reaching to specified domain / recipient |
| Alert – From users |
|
Alert raised to Level I support Eng. |
|
Check with users regarding any bounce mail |
|
if bounced mail is available the diagnose accordingly / contact the remote servers administrator |
|
Check the old log for any failures |
|
Check the domains for any RBL listings |
|
Corrective action |
|
Iinform the concerned person / authority |
|
| |
| Mails are getting distributed to local users |
| Alert – From users / Nagios automated alert |
|
Alert raised to Level II support Eng. |
|
Check the local queue |
|
Check the changed configuration if any |
|
Check the firewall for MX and SMTP environment |
|
Check for local disk space |
|
corrective action |
|
| |
