Halakhah for Yoma 22:26

From the laws of the commandment is that which they, may their memory be blessed, said (Menachot 28a) that these two sections impede each other; and even one writing impedes upon them. [This is] meaning even one letter that is not done properly - such as if the [blank] parchment does not encircle it from its four sides - impedes the [validity] of the mezuzah. And [also] that which they said (Menachot 34a) that the obligation of the mezuzah is to place it on the doorpost of his entrance from the right, as it is stated, "your house (beitecha)" - and our Rabbis explain it [as] your coming (beeatecha), and that when a person picks up [his feet], he picks us his right foot first. And [also] that which they, may their memory be blessed, said (Yoma 11), "Our rabbis taught, '"And on your gates" - it is one [whether they are] the gates of houses, courtyards, cities, towns, a barn, chicken coops, a hay storehouse, wine storehouses, or oil storehouses, all of them are obligated in [having] a mezuzah. It is possible that I would include a gatehouse, a portico, an open porch, and a balcony [serving as a corridor to several residences. Hence,] we learn to say, "house"; just as a house is designated for residence, so too [only] all that are designated for residence; to the exclusion of these that are not designated for residence. It is possible that I would include even a bathroom, a bathhouse, and a bath for immersion. [Hence,] we learn to say, "house"; just as a house is designed for dignity, so too [only] all that are designed for dignity; to the exclusion of these. It is possible that I would include even the Temple Mount, its chambers and the courtyards. [Hence,] we learn to say, "house"; just as a house is non-sacred, so too [only] all that are non-sacred; to the exclusion of these that are holy."' And a synagogue is in the category of holy houses (Mishneh Torah, Laws of Tefillin, Mezuzah and the Torah Scroll 6:6), so long as there is no house of residence there. But if there is a house of residence - such as the synagogues of villages within which guests reside - it is obligated.