Monitoring VGER's ZMailer MTA

These are highly experimental things for VGER's ZMailer MTA.

To get some idea of what all these are about, see: ZMailer Design Summary

View the queue:

Counters and graphs:

Live MTA counter/gauge snapshot
Some selected RRD graphs:
- SYS: Load Average, 1 minute
- SYS: Load Average, 5 minutes
- SYS: Spool Free Space in kB
- SYS: Spool Used Space in kB
- SYS: Logdir Free Space in kB
- SYS: Logdir Used Space in kB
- SS: Parallel incoming SMTP connects Gauge
- SS: Number of incoming SMTP connects (per sec)
- SS: Number of received RCPT verbs (per sec) (Includes also the flood of invalid destination addresses probing vger.)
- SS: Received message count at the Smtpserver (per sec)
- SS: Transmitted message count from the Smtpserver (per sec)
- SS: Transmitted recipient count from the Smtpserver (per sec)
- RT: Messages out from Router (per sec)
- RT: Recipients out from Router (per sec)
- RT: StoredMessages: Router's input queue gauge (This gauge does leak upwards; queue empties, while this claims there are some things left.. Fixing it isn't that important.)
- SC: StoredMessages: Gauge of messages presently in scheduler queue
- SC: StoredThreads: Gauge of different destination channel/host pairs presently in scheduler queue
- SC: StoredVertices: Gauge of different messages in total in those Threads
- SC: StoredRecipients: Gauge of different recipients in total in those Vertices (e.g. there can be multiple recipients for a given message in a given destination channel/host)
- SC: Transport agent processes (gauge)
- SC: Transport agents processes active (gauge)
- SC: Transmitted recipients (per sec)
- SC: Completely transmitted messages (per sec)
RRD graphs of them all:
BEWARE: 220+ GRAPHS!

ZMailer graph index

Script generating these pages

For the pathologically curious, here is the generator script.