match two columns in one sheet, copy to other sheet, match in additional sheets

I have a sheet that "receives" in checks and check numbers daily(dailymaillog) sheet. I would like to copy those two columns into a blank sheet to do a vlookup and then when their is a "match" put an "x" into the receipted column in the dailymaillog sheet. My problem is; I have daily sheets for the whole year with People entering checks and check numbers, in multiple columns on multiple sheets so I need to try to do a match. Any suggestions?