[Samba] dns replication error due to deleted records

Luca Olivetti luca at wetron.es
Thu Oct 10 18:23:15 UTC 2019

Today I noticed something that has been going on for some weeks:

I have 2 dc, (dc1 and dc2) both debian buster with the distro provided 
samba (4.9.5), recently upgraded from stretch.

samba-tool drs showrepl on dc2 says

         Default-First-Site-Name\DC1 via RPC
                 DSA object GUID: 89812346-9037-43b0-86ab-c5052f55125d
                 Last attempt @ Thu Oct 10 20:05:28 2019 CEST failed, 
result 58 (WERR_BAD_NET_RESP)
                 273 consecutive failure(s).
                 Last success @ Thu Oct 10 12:05:27 2019 CEST

(the rest of the incoming replications are fine, only the DomainDnsZone 

It turns out that dc2 chokes on "\0ADEL" dns records, supposedly deleted 

I found a "solution" here:


The procedure to solve it is not exactly the same but it put me on the, 
hopefully, right track. I scripted it since it got tiresome and it 
solved the replication problem, for a while, but now it reappeared 
(that's the message above).

This started on September 25, when I upgraded dc2 from stretch to 
buster. A few days later I also upgraded dc1 (it was still running jessie).

I'm using internal dns and the dhcp server talks to dc1 to update the 
dns records, that would explain why there are records to replicate but 
doesn't explain why samba fails (when it didn't before).

Luca Olivetti
Wetron Automation Technology http://www.wetron.es/
Tel. +34 93 5883004 (Ext.3010)  Fax +34 93 5883007

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