Strange behaviour with HTTP RFC Connection

Hi Experts,
today I investigated a strange behaviour in our SAP environment. I tried to create a HTTP RFC connection (SM59) from our integration server to a locale integration engine in our test environment.
http:<server>:<port>/sap/xi/engine?type=entry
A few days ago I do the same for the development environment and all works fine.
For test purposes I used my user for the connection but when I tried to test the connection (test button) the authentification fails. After a few attempts my user was locked on the target server. (I called a admin to unlock my user).
My first idea was that there is problem with the URL or something in this way. So I do a test within the browser and type in my user again. The result was - as aspect - a soap message that an empty message can not be processed.
My second idea was that there are troubles with the authorization so I used a system user for the connection. I test the connection and received a message that the user has not enough rights to send messages to the locale integration server.
So I came to the result that I mistyped my password due the first attempt. I try again and I was really very carefully by typing my password. I press the test button and it fails with the message that I could not logged on to the system. I try it many times and it always fails.
Finally I use the system user and attach the required roles to the user.
But has anybody an idea why it was not possible to use my user? I really don't understand it since it works fine in the development environment.
Björn

what is the version of SAP system in dev and test environments.......
Some older version SAP systems(4.6 version) require passwords in CAPITALs....
Edited by: Praveen Gujjeti on Mar 17, 2009 5:05 PM

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