NTP packets dropped even though permitted with a rule

Firewall log is full of entries for outbound UDP to 123 (NTP) such as:

2018:10:07-11:35:51 antssophos ulogd[18887]: id="2001" severity="info" sys="SecureNet" sub="packetfilter" name="Packet dropped" action="drop" fwrule="60002" initf="eth0" outitf="eth1" srcmac="c4:2f:90:0d:0d:4c" dstmac="00:15:5d:9e:f7:03" srcip="192.168.1.232" dstip="210.50.117.21" proto="17" length="76" tos="0x00" prec="0x00" ttl="63" srcport="40996" dstport="123" 

However I have created a firewall rule to allow all NTP traffic from internal netowrk to external network

Any ideas why the firewall is logging those drops even with that rule in place?

Thanks