Rsync from Netware to Synology

Hello.

I'm trying to make a rsync from netware 6 with rsync 2.6.3 client (have
tried with beta 2.6.9) to a Synologybox with linux on. When I try from
linux or windows OS no problem but from Netware 6-SP5 I get the following
error.

[2] SendBuffer: Error WSASend fd=35 nRet=-1 err=10054
[2] rsync error: error in socket IO (code 10) at io.c(1941)

My statement is:

rsync -avzPO --no-mp --log-file=sys:/rsync.log
--progress /public/ "192.10.19.231::rsync" --volume=SYS: --local-port=873
--port=873 --timeout=3600 --no-blocking-io --bwlimit=48



Anybody has a idea ?

Best regards
Tom