/var/log: # tail pop-before-smtp
[...]
read ts=Mar 22 11:03:29 ip=62.8.206.156
read ts=Mar 22 11:17:58 ip=217.235.18.66
        accepted „- not in mynetworks
        written ok
read ts=Mar 22 11:17:59 ip=217.235.18.66
purging ts=Fri Mar 22 10:21:50 2002 ip=217.224.233.74