Is one who leases space on the Internet to companies that publish pictures of women with their hair uncovered sinful, and must he not renew their annual subscription?

If the lessor knows in advance that the lessee will use the leased space for unlawful activities (such as publishing images of immodestly dressed women), then he is sinful for assisting in sin. However, if he did not know in advance, there is no sin upon him. Nevertheless, he should not renew the contract with them unless they cease doing so, and he ought to advise them, enjoin them to good, and forbid them from evil.