Mikrotik Remote logging Issue

Hi All,

I am using couple of dozens mikrotik in my network. I am keeping remote logging for most of them. But two of my MT are making issue. They are not even generating log. Nothing is sending on in the out going filter rules. Here are my configuration.

nov/07/2018 13:39:24 by RouterOS 6.43.4

/system logging action set 3 bsd-syslog=yes remote=XXXX src-address=XXXXX syslog-facility=local1 syslog-severity=info
/system logging add action=remote prefix=yyyy topics=firewall

When I put the filter rules
/ip firewall filter add action=accept chain=output dst-address=XXXX dst-port=514 protocol=udp

/ip firewall filter print detail stats

CHAIN ACTION BYTES PACKETS

0 output accept 0 0

It seems the Mikrotik is not sending anything to the remote syslog server.

same configuration is working for the other Mikrotik.. (same version or different version). I had tried disabling all other logs ( local), removing rules and re adding, rebooting... did not worked.

Is it a bug? Any one got any thing like that?

Regards