AMQ9207: The data received from host 'xxx' is not valid. ¦

[mqman]

Has anybody encountered this error before? We have a UNIX machine running MQSeries 5.1 CSD06 putting messages via remote queue definition to an NT cluster running MQSeries 5.2 CSD04. Any insight would be greatly appreciated.

 

[terenceyeo]

I'm currently facing this problem reported on my MQSeries Server 5.1 in /var/mqm/errors/AMQ<Some number>.0.FDC.

If anyone has a resolution to this problem and an explanation to the possible cause will be greatly appreciated.

 

[burza]

Explamnation is that someone does telnet to Your qmanager.

Try to telnet form another host to UNIX machine (on listener port) and write &quot;whatever whatever&quot; In eeror log you will see:

AMQ****: The data received from host 'hp (xxx.xxx.xxx.xxx.)' is not valid.

EXPLANATION:
Incorrect data format received from host 'xxx.xxx.xxx.xxx' over TCP/IP. It
may be that an unknown host is attempting to send data. An FFST file has been
generated containing the invalid data received.
ACTION:
Tell the systems administrator.

What more, there will bi *.FDC file with:

| Probe Description :- AMQ****: The data received from host |'xxx.xxx.xxx.xxx' is not valid. |
| Comment1 :- xxx.xxx.xxx.xxx |
| |
| Comment2 :- TCP/IP

at the end of this file under &quot;Dump of Transmission Segment&quot; you will see:
4000e5b0 77686174 65766572 whatever
4000e5c0 0D0A whatever