Intermittent Error using FTP/TLS

5 pts.
Tags:
Code
FTP
FTP Server
SSL
z/OS
Our shop has several jobs that are running on a z/OS system in which we are transfering data to an FTP server. Other than a difference in file names being transfered, the FTP script is virtually the same. Unfortunately, we are having a problem with one specific job. When attempting to log onto the FTP server (via port 987) using TLS, the step fails with a Error code of 410, the exact message reads: "FC0846 authServer: secure_socket_init failed with rc = 410 (SSL message format is incorrect)" The other jobs work with no issues, and to make matters work, this particular job only fails about half the time. If it was happening all the time, I would assume something was wrong with the script, but with it being intermettent, I am perplexed. I searched IBM and found some info on SSL message issues, but it was specifically addressing usage of port 990.

Answer Wiki

Thanks. We'll let you know when a new response is added.

FTP using TLS usually goes over two port numbers; 989 and 990. Moving to 987 implies that you are either using 987 for data or control but not both. The non-987 port might be defaulting to 989 or 990. That, or you are addressing 987 and using 986 or 988 by default.

But this question is almost four years old and we would like to know what you worked out.

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  • Spencer756
    [...] >> Intermittent error using FTP/TLS [...]
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