Here's the number WARNings/day for previous 8 days at one high-volume site I admin:
mx1# zegrep -ic "suspected image" /var/log/maillog.[0-9].gz /var/log/maillog.0.gz:1567 /var/log/maillog.1.gz:29057 /var/log/maillog.2.gz:24178 /var/log/maillog.3.gz:61723 /var/log/maillog.4.gz:52861 /var/log/maillog.5.gz:38923 /var/log/maillog.6.gz:35728 /var/log/maillog.7.gz:45805 and Tuesday is looking like Monday. Extremely weird.
