Permission denied for linux mount using AD user account

TrueNAS General
1

TrueNAS Scale 25 CE

Ubuntu 20.04

TrueNAS is domain joined. I can successfully connect to the SMB share using smbclient, but when I try to mount the share, it fails.

Command used:
sudo mount -t cifs //truenas/share/dataset /mnt/local -o username=ADUser,password=password,domain=DOMAIN.LOCAL,nounix,noserverino,uid=TruenasADUserID,gid=TruenasADgroupID,sec=ntlmss,ver=3

Receive mount error (13): permission denied.

Using autoRID for ldmapping. Any suggestions on how to solve would be appreciated.

2

Your mount options look really weird. For example uid=True and sec=ntlmss where did you get these?