[CLUE-Tech] Wierd network behaviour

[Russell Glissmann]

While troubleshooting other network issues, I ran a tcpdump on a network
file server.  I have repeatedly seen the following: 
255.89.194.zip > 0.0.zip: at-#6 25
255.89.194.zip > 0.0.zip: at-#6 25
255.89.194.zip > 0.0.zip: at-#6 25
255.89.194.zip > 0.0.zip: at-#6 25
255.89.194.zip > 0.0.zip: at-#6 25
255.89.194.zip > 0.0.zip: at-#6 25
255.89.194.zip > 0.0.zip: at-#6 25
255.89.194.zip > 0.0.zip: at-#6 25
255.89.194.zip > 0.0.zip: at-#6 25
255.89.194.zip > 0.0.zip: at-#6 25
There is obviously other network traffic as well, but this is the
traffic that concerns me.  Considering the number of viruses that travel
in zip files, is this what I am looking at?  I ran a 'find' on the
server looking for zip files, but none were recent, and none with the
same name as above.  
Ideas / suggestions are appreciated.

Thanks!
Russ