Hi Souheila,

It does not look like your remote machine accepts TLS:

$ openssl s_client -connect 52.239.241.136:2049 
Connecting to 52.239.241.136
CONNECTED(00000003)
403754EAC87F0000:error:0A000126:SSL routines::unexpected eof while reading:../ssl/record/rec_layer_s3.c:696:

Why exactly do you think that stunnel could be used to mount NFS file shares?  Stunnel can be a TLS client, but not an NFS client.  Those are different protocols.

Best regards,
    Mike

I am using stunnel to mount an azure nfs file share. 

The stunnel process log the following message

Dec 18 17:55:20 vmubuntu18 stunnel: LOG3[23840]: SSL_connect: Peer suddenly disconnected

The stunnel configure file is

verifyChain = no

debug = debug

output = /etc/stunnel/microsoft/aznfs/nfsv4_fileShare/logs/stunnel_52.239.241.136.log

pid = /etc/stunnel/microsoft/aznfs/nfsv4_fileShare/logs/stunnel_52.239.241.136.pid

TIMEOUTidle = 61

[52.239.241.136]

client = yes

accept = 127.0.0.1:20049

connect = 52.239.241.136:2049 

A trace with tcpdump display the following logs

We observe a reset connection between azure server  and my machine.

Best regards

Souheila

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