Fixing Replication Failures

We are having occasional replication errors throughout our domain, but one
of the sites in particular seems to be a problem. Hoping for some advice if
this looks familiar to anyone.

If we get replication problems as indicated by repadmin /showrepl, rebooting
the remote DC gets things going again, but is not a great solution and also
it take a long time for the DC to come back up.

We have two local DCs both of which replicate with the remote DC. The
replication has failed with the remote and both of these DCs, but not always
at the same time (i.e. one works, one doesn't).

If I try to run a forced replication (repadmin /replicate...), I get the
following:
DsReplicaSync() failed waith status 1727 (0x6bf).

(I got no hits searching for that code on google BTW)

Pinging between the DCs works, as does browsing. I also tried the port query
tool on 135 and it works. The only other thing that seems to fail when this
is replication error occurs is that I can't remote desktop to the remote DC
from within out local LAN while this error is occuring. However I can remote
to another server within the remote LAN and then remote from there to the
DC.

The other point of interest in this is that if I run AD Sites and Service on
the remote DC, its site shows that it is trying to replicate with every site
in the company. If I correct that so it just replicates with the local DCs,
later I can look at it again and its changed back.

Event viewer shows nothing of great value, really only errors that there was
a problem (15308).

Thanks!


.

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