My Monitor has been reporting over a thousand items in this "bucket" periodically ( a couple of times a week ) in the middle of the night for one of my MTA's
It is an MTA that holds only a GWIA.

I have confirmed that there is not alot of email traffic happening at the time on Dec 30 between 2:00 and 3:00 there were < 10 emails that hit the GWIA, and it is not at a time when I have a scheduled event running on any agents.

I checked the MTA log file and there are thousands of similar lines
03:19:58 F48E RTR: dom4: 000834cb.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834cb.5NC (2 kb)
03:19:58 F48E RTR: dom4: 000834cc.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834cc.5NC (2 kb)
03:19:58 F48E RTR: dom4: 000834cd.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834cd.5NC (2 kb)
03:19:58 F48E RTR: dom4: 000834ce.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834ce.5NC (2 kb)
03:19:58 F48E RTR: dom4: 000834cf.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834cf.5NC (2 kb)
03:19:58 F48E RTR: dom4: 000834d0.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834d0.5NC (2 kb)
03:19:58 F48E RTR: dom4: 000834d1.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834d1.5NC (2 kb)
03:19:58 F48E RTR: dom4: 000834d2.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834d2.5NC (2 kb)
03:19:58 F48E RTR: dom4: 000834d3.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834d3.5NC (2 kb)
03:19:58 F3D5 RTR: dom4: 000834d4.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834d4.5NC (2 kb)
03:19:58 F3D5 RTR: dom4: 000834d5.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834d5.5NC (2 kb)
03:19:58 F3D5 RTR: dom4: 000834d6.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834d6.5NC (2 kb)
03:19:58 F3D5 RTR: dom4: 000834d7.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834d7.5NC (2 kb)
03:19:58 F3D5 RTR: dom4: 000834d8.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834d8.5NC (2 kb)
03:19:58 F3D5 RTR: dom4: 000834d9.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834d9.5NC (2 kb)
03:19:58 F3D5 RTR: dom4: 000834da.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834da.5NC (2 kb)
03:19:58 F3D5 RTR: dom4: 000834db.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834db.5NC (2 kb)
03:19:58 F3D5 RTR: dom4: 000834dc.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834dc.5NC (2 kb)
03:19:58 F3D5 RTR: dom4: 000834dd.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834dd.5NC (2 kb)
03:19:58 F3D5 RTR: dom4: 000834de.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834de.5NC (2 kb)
03:19:58 F3D5 RTR: dom4: 000834df.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834df.5NC (2 kb)
03:19:59 F3F5 RTR: dom4: 000834e0.5NC: Routing /var/gw/dom4/mslocal/gwinprog/4/000834e0.5NC (2 kb)

what would be the cause?