[Samba] how to know SMB protocol versions supported by a host

[Piviul]

I have a little problem using samba; I have a bash script that should 
mount some LAN hosts shares. Some of these hosts support only SMB1 
protocol. If I try to mount a share on a host that support only SMB1 
without specifying the protocol to use or specifying SMB3 or SMB2 the 
mount command seems to freeze; if I specify on the options vers=1 all 
seems to works.

There is a way to know the SMB protocol version supported by a host?

Piviul