z/OS Communications Server: IP Messages Volume 2 (EZB, EZD)
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EZD1824E

z/OS Communications Server: IP Messages Volume 2 (EZB, EZD)
SC27-3655-01

EZD1824E
jobname WAITING FOR A TCPIP STACK

Explanation

The Communication Server SMTP (CSSMTP) application cannot communicate with a TCP/IP stack. This message might be issued during CSSMTP initialization or during mail processing.

There are four possible causes of this error:
-p tcpStack
The start option stack is not available.
_BPXK_SETIBMOPT_TRANSPORT tcpStack
The environment variable stack is not available.
No TCP/IP affinity
No stack is available.
EZB.STACKACCESS
Stack security settings prevent communication with a stack.

See the information about starting the CSSMTP application in z/OS Communications Server: IP Configuration Reference for information about stack affinity.

In the message text:
jobname
The job name of the task that started the CSSMTP application.

System action

CSSMTP initialization or mail processing does not complete and CSSMTP periodically tries to communicate with a stack. This message will clear after CSSMTP connects to the TCP/IP stack.

Operator response

Save the log file and contact the system programmer.

System programmer response

Examine the log file to help determine the cause of the problem and which stack needs to be started. Based on the following, take the necessary corrective action:
  • If you are using the -p start option, then verify that the specified stack is started.
  • If you are using the _BPXK_SETIBMOPT_TRANSPORT environment variable, then verify that the stack configured on the environment variable is started.
  • If you are not using TCP/IP affinity, then verify that a stack is available.
  • If you are restricting stack access by using the SERVAUTH class resource EZB.STACKACCESS then verify that the CSSMTP application has authority to access to the resource.

If you need more information during mail processing time to diagnose the warnings, issue MODIFY LOGLEVEL,LEVEL=79 to increase the log level. Check the application trace log for failures when performing the TCP/IP socket() function. The inability to obtain a socket blocks communication between the application and the TCP/IP stack.

User response

Not applicable.

Problem determination

None.

Source

z/OS® Communications Server TCP/IP: CSSMTP

Module

ezamlcfg

Routing code

1,8

Descriptor code

2,7

Automation

This message is written to the system console and log file for CSSMTP. This message is a good candidate for automation. Automation can alert you to when CSSMTP cannot communicate with a stack.

Example

EZD1824E CSSMTP1 WAITING FOR A TCPIP STACK 

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