dots in log file

Kimmo Hedman <[email protected]>
Newsgroups gmane.network.djbdns
Message-ID <[email protected]> 
Hi,
our server answers to the questions about 1000/5min, sometimes it  
suddenly raises to 2000/5min and looking from log it shows dots like  
this:

@4000000049536aac1c085694 5c507fc1:f87c:0048 + 000f realdomain.com
@4000000049536aac2a791d94 45328151:5940:0dc4 + 0002 .
@4000000049536aad08985334 45328151:37fb:4010 + 0002 .
@4000000049536aad2230579c 45328151:e197:8673 + 0002 .
@4000000049536aad2651f984 d5cab692:5eaa:0bf1 + 000f realdomain.net
@4000000049536aae003adc5c 45328151:b690:6ea4 + 0002 .
@4000000049536aae19f349a4 45328151:6354:8644 + 0002 .
@4000000049536aae1f43807c 53fff607:bae8:06a7 + 0001 someotherdomain.com

What are those dots ? Is it normal ?

Regards,
Kimmo Hedman
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.