[Samba] Samba MFP "scan to share" issue

[Jeremy Allison]

On Tue, Aug 07, 2018 at 11:30:51AM -0300, Edouard Guigné via samba wrote:
> Hello,
> 
> I am testing a new samba share (Version 4.7.1) in order to replace an old
> samba share (Version 3.5.6).
> Especially, I am facing issues with Canon MFP "scan to share".
> 
> With model Canon IR1730 (SMB1 only capable), "scan to share" seems to not
> work with the new 4.7.1 samba share.
> The canon error code returns by the Canon iR1730 is #0753 with this 4.7.1
> samba share.
> It is still well working with old 3.5.6 samba share.
> According to canon, iR1730 is only SMB1 capable.
> 
> I have also performed tests with another Canon MFP iR1435 (a newer canon
> model), and "scan to share" works for both old and new samba shares.
> According to canon, iR1435 is SMB2 capable. This is the only difference I
> noticed between MFP printers.
> 
> So It is possible that SMB1 is disabled by default with new 4.7.1 samba
> share ?

No.

> If yes, how to enable it ?
> Otherwise, how could I test and debug between iR1730 and  the samba 4.7.1
> server ?

Use wireshark and target port 445. That should give you error information.