Can't access samba share by hostname or FQDN, only by IP on Windows 2008 R2 Domain

I have a CentOS 7 server with Samba 4.6.2, joined to a Windows Server 2008 R2 Domain, and cannot access any shares from Windows using the server's hostname or FQDN, only by IP address.

I have verified DNS is working with nslookup for server to client, client to server, and verified all SRV records for AD resolve on the samba server.

When I try using the hostname or FQDN Windows will display an error "Logon Failure: The target account name is incorrect" and the samba logs for the client show this:

[2017/09/28 13:04:00.119699,  3] ../source3/smbd/oplock.c:1322(init_oplocks)
  init_oplocks: initializing messages.
[2017/09/28 13:04:00.119899,  3] ../source3/smbd/process.c:1957(process_smb)
  Transaction 0 of length 159 (0 toread)
[2017/09/28 13:04:00.119956,  3] ../source3/smbd/process.c:1538(switch_message)
  switch message SMBnegprot (pid 15584) conn 0x0
[2017/09/28 13:04:00.120920,  3] ../source3/smbd/negprot.c:603(reply_negprot)
  Requested protocol [PC NETWORK PROGRAM 1.0]
[2017/09/28 13:04:00.120968,  3] ../source3/smbd/negprot.c:603(reply_negprot)
  Requested protocol [LANMAN1.0]
[2017/09/28 13:04:00.120999,  3] ../source3/smbd/negprot.c:603(reply_negprot)
  Requested protocol [Windows for Workgroups 3.1a]
[2017/09/28 13:04:00.121026,  3] ../source3/smbd/negprot.c:603(reply_negprot)
  Requested protocol [LM1.2X002]
[2017/09/28 13:04:00.121053,  3] ../source3/smbd/negprot.c:603(reply_negprot)
  Requested protocol [LANMAN2.1]
[2017/09/28 13:04:00.121080,  3] ../source3/smbd/negprot.c:603(reply_negprot)
  Requested protocol [NT LM 0.12]
[2017/09/28 13:04:00.121107,  3] ../source3/smbd/negprot.c:603(reply_negprot)
  Requested protocol [SMB 2.002]
[2017/09/28 13:04:00.121133,  3] ../source3/smbd/negprot.c:603(reply_negprot)
  Requested protocol [SMB 2.???]
[2017/09/28 13:04:00.121348,  3] ../source3/smbd/smb2_negprot.c:290(smbd_smb2_request_process_negprot)
  Selected protocol SMB2_FF
[2017/09/28 13:04:00.124041,  3] ../source3/smbd/negprot.c:730(reply_negprot)
  Selected protocol SMB 2.???
[2017/09/28 13:04:00.135575,  3] ../source3/smbd/smb2_negprot.c:290(smbd_smb2_request_process_negprot)
  Selected protocol SMB2_10
[2017/09/28 13:04:00.150178,  1] ../source3/librpc/crypto/gse.c:646(gse_get_server_auth_token)
  gss_accept_sec_context failed with [Unspecified GSS failure.  Minor code may provide more information: Request ticket server cifs/rack14.svsn.int@SVSN.INT not found in keytab (ticket kvno 10)]
[2017/09/28 13:04:00.161945,  3] ../source3/smbd/server_exit.c:246(exit_server_common)
  Server exit (NT_STATUS_CONNECTION_RESET)
[2017/09/28 13:04:00.179981,  3] ../source3/smbd/oplock.c:1322(init_oplocks)
  init_oplocks: initializing messages.
[2017/09/28 13:04:00.180172,  3] ../source3/smbd/process.c:1957(process_smb)
  Transaction 0 of length 108 (0 toread)
[2017/09/28 13:04:00.198458,  3] ../source3/smbd/smb2_negprot.c:290(smbd_smb2_request_process_negprot)
  Selected protocol SMB2_10
[2017/09/28 13:04:00.214297,  1] ../source3/librpc/crypto/gse.c:646(gse_get_server_auth_token)
  gss_accept_sec_context failed with [Unspecified GSS failure.  Minor code may provide more information: Request ticket server cifs/rack14.svsn.int@SVSN.INT not found in keytab (ticket kvno 10)]
[2017/09/28 13:04:00.227012,  3] ../source3/smbd/server_exit.c:246(exit_server_common)
  Server exit (NT_STATUS_CONNECTION_RESET)

Samba config:

[global]
  workgroup = DOMAIN
  realm = DOMAIN.LOCAL
  security = ads
  template homedir = /home/%U
  template shell = /bin/bash
  kerberos method = secrets and keytab
  winbind use default domain = true
  winbind offline logon = true
  idmap config * : backend = nss
  idmap config * : range = 3000-7999
  idmap config DOMAIN : backend = ad
  idmap config DOMAIN : default = yes
  idmap config DOMAIN : range = 10000-1000000
  idmap config DOMAIN : schema_mode = rfc2307
  winbind nss info = rfc2307
  winbind enum users = yes
  winbind enum groups = yes
  winbind nested groups = yes
  log file = /var/log/samba/log.%m
  log level = 3
  max log size = 50
  client use spnego = yes
  load printers = no
  cups options = raw
  printcap name = /dev/null

I'm not sure what I am missing or what else to troubleshoot. Rejoining the domain and even wiping out the samba config has not helped. I have also manually added cifs to the keytab but then windows will keep prompting for a username and password even when correct. Any ideas?