Hello, I'm trying to add a MX record to a Samba DC with internal DNS using the following syntax: samba-tool dns add dns.example.com example.com example.com MX " smtp.example.com 10" -U domainadmin And I get: Failed to bind to uuid 50abc2a4-574d-40b3-9d66-ee4fd5fba076 for ncacn_ip_tcp:192.168.63.9[1024,sign,target_hostname=dns.example.com,abstract_syntax=50abc2a4-574d-40b3-9d66-ee4fd5fba076/0x00000005,localaddress=192.168.63.9] NT_STATUS_IO_TIMEOUT ERROR(runtime): uncaught exception - (-1073741643, '{Device Timeout} The specified I/O operation on %hs was not completed before the time-out period expired.') File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 175, in _run return self.run(*args, **kwargs) File "/usr/lib/python2.7/dist-packages/samba/netcmd/dns.py", line 1062, in run dns_conn = dns_connect(server, self.lp, self.creds) File "/usr/lib/python2.7/dist-packages/samba/netcmd/dns.py", line 40, in dns_connect dns_conn = dnsserver.dnsserver(binding_str, lp, creds) Google doesn't help much. All I found was several messages from people looking for the correct syntax for adding an MX. I sort of stumbled on the above myself. I'm also pretty sure that the server works correctly because I had just added a records for hosts imap, smtp and archives. Thanks in advance Philippe The trouble with common sense is that it is so uncommon. <Anonymous>