SMTP (PI_SMTP)
- Organization of this page
Function
The SMTP (PI_SMTP) record stores information about SMTP service response time. This is a multi-instance record.
Default and changeable values
|
Item |
Default value |
Changeable |
|---|---|---|
|
Collection Interval |
360 |
Y |
|
Collection Offset |
0 |
Y |
|
Log |
No |
Y |
|
LOGIF |
(Blank) |
Y |
|
Over 10 Sec Collection Time |
No |
N |
ODBC key fields
PI_SMTP_MSR_COND_ID
Lifetime
None
Record size
-
Fixed part: 681 bytes
-
Variable part: 320 bytes
Fields
|
View name (Manager name) |
Description |
Summary rule |
Format |
Delta |
Data source |
|---|---|---|---|---|---|
|
Data Transfer Time (DATA_TRANS_TIME) |
Data transfer time (seconds) ((7) in Figure 10-8) |
AVG |
double |
No |
Probe Daemon |
|
DNS Time (DNS_TIME) |
DNS time (seconds) ((4) in Figure 10-8) |
AVG |
double |
No |
Probe Daemon |
|
Preprocessing Time (PRE_PROCESS_TIME) |
Preprocessing time (seconds) ((6) in Figure 10-8) |
AVG |
double |
No |
Probe Daemon |
|
Setup Time (SETUP_TIME) |
Setup time (seconds) ((2) in Figure 10-8) |
AVG |
double |
No |
Probe Daemon |
|
SMTP Time (SMTP_TIME) |
SMTP time (seconds) ((3) in Figure 10-8) |
AVG |
double |
No |
Probe Daemon |
|
TCP Connection Time (TCP_CON_TIME) |
TCP connection time (seconds) ((5) in Figure 10-8) |
AVG |
double |
No |
Probe Daemon |
|
Throughput (THROUGHPUT) |
Throughput (bits/second). This is determined by the size of sent email and the data transfer time. |
AVG |
double |
No |
Probe Daemon |
|
Total Amount of Data (TOTAL_DATA_SIZE) |
Total amount of data transferred between the SMTP probe and the measurement-target server via the TCP connection (bytes) |
AVG |
double |
No |
Probe Daemon |
|
Total Response Time (TOTAL_RESP_TIME) |
Total response time (seconds) ((1) in Figure 10-8) |
AVG |
double |
No |
Probe Daemon |
The following figure shows the SMTP sequence.
|
|
![[Figure]](GRAPHICS/ZUV09030.GIF)
SMTP operating environment and notes
A SMTP probe creates a message text of a specified size and measures the time required for completing message transmission to the destination address.
The following describes and provides notes on a SMTP operating environment.
Subject
The subject in the measurement email header is "Test mail from PFM - Agent for Service Response.".
Text
The text for measurement emails is a character string consisting of the character o.
Attached file
The SMTP probe sends only the header and text; it does not attach any file to measurement emails.
Handling of the transmitted measurement emails
After sending measurement emails to the target server, the SMTP probe does not delete the emails. If the measurement covers a long period of time, a large number of measurement emails will accumulate, and a shortage of disk space may occur at the target mail server. To avoid this, you should use one of the following methods to delete emails periodically from the target mail server:
-
Deleting emails by registering a measurement condition
Register a POP3 or IMAP4 measurement condition with the email deletion option enabled, and then perform that measurement to delete emails.
-
Having the user delete emails
Have the user periodically delete the measurement emails that were sent by the SMTP probe.
RFC compliance
-
RFC1939: Post Office Protocol - Version 3
-
RFC2821: Simple Mail Transfer Protocol
-
RFC2822: Internet Message Format
For the functions that are not compliance with RFCs and the restrictions, see the above notes.