– Q. I asked the Rov if someone is living in a building that has also some unfriendly Muslims that display hate and harm to the Jewish tenants. Is it possible to move the
mezuza from the outside of the frame to the inside of the apartment to avoid the enemies harm?

A. Shulchan Aruch (Y.D. 285: 2and 289 :2) rules that the location for the placement of the mezuza is inside the frame of the house, on the “tefach” (about 10 cm.) facing the outside. Remah (ibid) adds that if those measurements were not met, it is still kosher as long as it is on the frame itself. Shach (2) and others explain that the reason to the above is that as soon as one is about to enter, one should encounter the mezuza first.

Also,they add that the mezuza should protect as much of the inside space possible.
Shach (289: 3) mentions a difference of opinions if the mezuza was placed on the back of the door to avoid identification and harm.

Horav Shlomo Millers Shlit”a opinion is that in need the mezuza could be moved.

Rabbi A. Bartfeld as revised by Horav Dovid Pam, Horav Aharon Miller, Horav Chanoch Ehrentreu and Horav Kalman Ochs Shlit’a.