Catalyzes the hydrolysis of ferric enterobactin (Fe-Ent) (PubMed:150859, PubMed:1534808, PubMed:8148617). Is responsible for the release of iron from ferric enterobactin (PubMed:1534808). Also catalyzes the hydrolysis of iron-free enterobactin (Ent) (PubMed:150859, PubMed:1534808, PubMed:8148617). Cleavage of ferric enterobactin results in a mixture of three hydrolysis products, 2,3-dihydroxybenzoylserine (DHBS), the linear dimer (DHBS)2 and the linear trimer (DHBS)3, while cleavage of iron-free enterobactin yields only the monomer (PubMed:8148617). Hydrolysis of ferric enterobactin is less efficient than hydrolysis of unliganded enterobactin (PubMed:150859, PubMed:1534808). It also cleaves the aluminum (III) complex at a rate similar to the ferric complex (PubMed:1534808). 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 Inhibited by N-ethylmaleimide. Monomer. Expression is increased under iron stress (PubMed:3040679). Repressed by Fur under iron-rich conditions (PubMed:9573216). Mutant is unable to produce linear DHBS compounds. Belongs to the Fes family. Truncated N-terminus. Truncated N-terminus.