ftp open on cisco 871w

Hi all.

i have just set up my new cisco 871w, and just to check the firewall in it i made a port scan on my self (ofcourse from another net than the router is on)

the result from the test is that http AND ftp is open, but for some reason are there none of the port scanners that can see port 25 which i have opened for my mail server

BUT!!!

i have opened port http and smtp because of my server, i havent opened ftp of any kind, i have used 3 defferent port scanners, both free, and some you need to buy.

my acl have only port 25 and port 80 in it.

anyone who can give me damn good answer for this one?

regards
christian.