Catalyzes the hydrolysis of ferric enterobactin (Fe-Ent). Is responsible for the release of iron from ferric enterobactin. Also catalyzes the hydrolysis of iron-free enterobactin (Ent). Hydrolyzes ferric monoglucosyl-C-Ent (Fe-MGE) poorly and does not hydrolyze ferric diglucosyl-C-Ent (Fe-DGE) or ferric triglucosyl-C-Ent (Fe-TGE) at all. Also hydrolyzes apo MGE, but catalyzes the hydrolysis of apo DGE very poorly, and does not process apo TGE at all. The catalytic efficiency for processing Fe-Ent is much higher than that for apo Ent, suggesting that Fe-Ent is the physiological substrate. Fe(III)-enterobactin + H(+) + 3 H2O = Fe(III)-[N-(2,3-dihydroxybenzoyl)-L-serine] + 2 N-(2,3-dihydroxybenzoyl)-L-serine Fe(III)-enterobactin + H2O = Fe(III)-[N-(2,3-dihydroxybenzoyl)-L-serine]3 + H(+) Fe(III)-[N-(2,3-dihydroxybenzoyl)-L-serine]3 + H(+) + H2O = Fe(III)-[N-(2,3-dihydroxybenzoyl)-L-serine]2 + N-(2,3-dihydroxybenzoyl)-L-serine Fe(III)-[N-(2,3-dihydroxybenzoyl)-L-serine]2 + H(+) + H2O = Fe(III)-[N-(2,3-dihydroxybenzoyl)-L-serine] + N-(2,3-dihydroxybenzoyl)-L-serine kcat is 9 min(-1) with Fe-Ent as substrate. kcat is 850 min(-1) with MGE as substrate. kcat is 1.4 min(-1) with Fe-MGE as substrate. Belongs to the Fes family.