SOme one can help me telling me what these mean..

these pictures are from today

smtp 1.jpg

smtp 2.jpg

on the first picture are stats from the mta_count and say i got 3 spikes for like 13000 mails

the second picture are from mtaqueue.csv and on those hrs show a spike but for 20 requests?

my question is these is normal? or i got a problem?

Ty in advance