Server 2008 R2 AD Replication "The target principal name is incorrect."

I've tried following the instructions found here: https://support.microsoft.com/en-us/kb/288167, but still cannot get a domain controller at my remote site to replicate.  The connection is good, the server is reachable, but the last replication was 21 days ago.

This is my current repadmin /replsummary:

Source DSA          largest delta    fails/total %%   error
 DC1                       29m:08s    0 /  10    0
 DC2                       29m:07s    0 /  10    0
 DC3               22d.02h:04m:24s    5 /  15   33  (2148074274) The target principal name is incorrect.
 DC4                       33m:05s    0 /  10    0
 DC5                       32m:35s    0 /  10    0
 DFW-DC-01                 29m:08s    0 /   5    0


Destination DSA     largest delta    fails/total %%   error
 DC1                       30m:58s    0 /  10    0
 DC2                       23m:59s    0 /  10    0
 DC3                       29m:08s    0 /  15    0
 DC4                       32m:35s    0 /  10    0
 DC5                       33m:06s    0 /  10    0
 DFW-DC-01         22d.02h:04m:25s    5 /   5  100  (2148074274) The target principal name is incorrect.