Did anyone else expierence Wrong Mailcounting in the Daily Mailreport

Absolute weird.
First it says one of my Domains sending 208 mails - while this domain does almost noting it cant be really true

so i made a grep of the log about top sender account which had 200 messages sent yesterday (which is my personal account)

turns out as expected nothing in the logs about sending mails

but what i do is i sync my Briefcase with android over webdav

could it be that those syncs are counted ?
i get also some error logs because of that sync - so no wonder 50 of em are errors ok fine but where the hell are the rest of 150

so i took a deeper look and it looks like some other domains have that issue too

any idea ?