In addition to Answer: 30381 i would like to say that MY MOTHER was the one who drank her fathers, relatives (a far related phoppi) milk. so the brother of my mothers wet nurse/foster mother become My Mothers mahrah. so do they also become my mahram.? since my mother is the one who drank her far related phoppis milk.
Answer
(Fatwa: 972/L=375/TL=1432)
Yes, he will also be your mahram.
لقوله عليه السلام: يحرم من الرضاع ما يحرم من النسب.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband